Dealt with ICVerify today. Interesting app. The user database and permissions controls are in an ICV instance of SQL. The actual data for CC transactions isn't (I havent found that yet). In any case there is no ODBC connection for the user db either. You do need to run the user manager and point it at the correct database so untimately it was not a hard fix. Just install the user db stuff on the new server, re-create the users and point the workstations to it.
On another note we are having a few users with crashing back-side applications referencing memory addresses 0x0000ba0. userinit.exe wmiprvse.exe and others. Nothing definitive found yet.