Need passwords to Synch

I have a Microsoft Windows Server 2000 (5.00.2195) Service Pack 4 with 1.5
Gigabyte RAM in a workgroup called: “Workgroup�. It runs a SQL Server package
with allows reports from our UNIX server to be run. The authors of the
package say the SQL Server cannot be moved into our Domain. They also do not
want us to create a domain and they want us to leave the SQL Server in the
workgroup. I have researched a “two-way Realm Trust�but this does not seem to
be a viable solution. I need it’s passwords to synch with our Windows Server
2003 Domain passwords.
Any ideas?
Thanks!

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brian