Queries :: List Latest In Each Group

I have a table of SOPs/WIs. Each, with time, gets a new version - this I keep in the child table.

tblVersions
------------
VersionID (PK)
SOPID(FK)
Version (integer)
IssueDate (date)

I want to make a list of the currently valid versions, i.e. for each SOPID pick the VersionID with the latest date.

One can do many things with subqueries and Max - functions, but after some experimentation I have stumbled upon this:

Code:
SELECT Last(tblTest.VersionID) AS LastOfVersionID
FROM tblTest
WHERE (((tblTest.IssueDate)<Date()-10))
GROUP BY tblTest.SOPID;

The function Last has a bit tricky reputation and description on the web. It does yields the right result in my testcase though , see the attached db - run query3.

Query3

Code:
LastOfVersionID
100
90
20
40
666
888
55
8

Update:
Well, it isn't. Just changing the VersionID numbers to something other than an ascending sequence renders an incorrect result with the above query. So what is the best way to get the desired result? (Access 2007)