Generating A Random Code Which Is Not In Database

I am trying to write a script that generate random code which are not in database.

Things are ok on these points:

1. Generating a random code

2. Controlling whether it is in database.

For now, if the code is in database, it gives a message.

What I want the funstion do is to generate a code which is not in db?

How can id do this?

I write the code as reference.....

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Generating Random Number...

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database name is datafile.mdb.
Report name is "reportTarge".
here is the asp code for this.

<%
Dim objAccess
Set objAccess = Server.CreateObject("Access.Application")
objAccess.OpenCurrentDatabase "D:Databasedatafile.mdb"
objAccess.DoCmd.OutputTo 3, "reportTarget", "Snapshot Format (*.snp)", "snapshotname.snp"
objAccess.DoCmd.Quit 2
%>

But while executing this asp code ,i am getting the following error in my IE browser.

Error Type:
Server object, ASP 0178 (0x80070005)
The call to Server.CreateObject failed while checking permissions. Access is denied to this object.

What is the reason of this error (while creating instance of the access)?. Is there any problem with my IIS server setting ?If there, how to solve it?

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I set up a random code for people registering with my site.....

letters="1234567890abcdefghijklmnopqrstuvwxyz"
for i=1 to 16
Randomize()
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code=code&mid(letters,rNum,1)
next

but for some reason it sometimes saves code as an empty string. When I register a fake name, ie zzz, it seems to work fine, but for some of my members is saves as an empty string.

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Here's what i need:

[vbs]
"SELECT * FROM Articles WHERE Category = 'Reviews' and SubCat = {RANDOM CATEGORY} LIMIT 5;"
[/vbs]

Now, I think the last post on the thread I read said the guy could make an Array and just pick a random item out of that...and that makes sense in my case, listing all the Categories and then picking a random one.But, I don't know how to do it! I don't have much experience in arrays

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<%
objConn2.open strconn2
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objRS2.Open "SELECT * FROM Products", objConn2

Do While Not objRS2.EOF
Response.Write ":: <a href=""productsDisplay.asp?ProductID=" & objRS2("ProductID") & """>" & objRS2("Product_Description") & "</a><br>"
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ID FIRSTNAME LASTNAME

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Below is my code, I am using an array to store the images but the images are not displayed for some reason. Any help would be appreciated.

<% Dim rstResult
Dim strSQL
Dim img(100)
imgID = 0
set rstResult = Server.CreateObject("ADODB.Recordset")
strSQL = "sp_sel_TilesByType 'O'"
rstResult.Open strSQL, strConnect

set rResult = Server.CreateObject("ADODB.Recordset")
sSQL = "sp_sel_TilesByType 'O'"
rResult.Open sSQL, strConnect


if not rResult.EOF then

do while not rResult.EOF
response.write("hi")

imgID = imgID + 1
img(imgID) = "images/tiles/" & rResult("TileImage")
response.write(img(imgID))
rResult.movenext

loop
end if

if not rstResult.EOF then
intVendorID = 0
do while not rstResult.EOF


if intVendorID <> rstResult("VendorID") then
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Response.Write "<p>"
Response.Write "<a href=javascript:popWin('tileview.asp?" & rstResult("TileID") & "','',1,1,1,1,700,600);>"
'Response.Write "<img src=images/tiles/" & rstResult("TileImage") & " border=0>"
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Response.Write "</p>"
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How can I do it?

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Dim MyValue,sqlRandom
Dim arrayRandom(8)
for i = 1 to 8
Randomize
MyValue = Int((100 * Rnd) + 1)
arrayRandom(i) = MyValue
response.write "<p> Array Value:" & arrayRandom(i)

sqlRandom = "UPDATE CarParkDetails SET FreeSpaces = '" & arrayRandom(i) & "'"
Conn.execute(sqlRandom)

next

I can't see whats wrong!

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Code:

<%=session("strFirstName")%>

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<%
limit=3
redim link(limit)
redim image (limit)

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link(2)="xxx"
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image(3)="image3.jpg"

randomize
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%>
<center>
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[VBS]<%@LANGUAGE="VBSCRIPT" CODEPAGE="1252"%>

<%
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dim theRandom

Randomize
'RandomNumber = Int((upperbound - lowerbound + 1) * Rnd + lowerbound)

theRandom= Int((99 - (0) + 1) * Rnd + (0))

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