Control Transaction In Sybase Database Using Sql-server 2000

Can anyone help me with this scenario!!!!
I have a sybase database and a sqlserver 2000 database.
I want to insert data into sybase database table thru sql-server 2000 using distributed queries
When i execute the following the transaction


Create procedure myCurrentDataBaseProcedure
as
begin

begin tran
insert into mytable values(1)
if @@error <>0
begin
rollback transaction
return
end
insert into sybasedatabaseserver.databasename.dbo.tablename values(1)
if @@error <>0
begin
rollback transaction
return
end
commit transaction
end

The procedure is created in sql server database
trying to execute this procedure..shows error
The first part of the procedure is executed.

But the error is here
insert into sybasedatabaseserver.databasename.dbo.tablename values(1)
The data is succesfully inserted in the local database
I am unable to insert data into the remote database
Can anyone suggest me wht shd i do in this scenario
Are there any drivers to be loaded to commit this transactions

Pl.Help