Copy Database Wizard (MSSQL 2000)

Trying to copy a mssql 7 db from a NT 4.0 server to a mssql 2000 default instance on a Windows 2003 server using the Copy Database Wizard. The Wizard indicates that the database is OK to copy but that the "Files on the source have the same name as on the destination or there is not enough free disk space on the destination." Both of these statements are false. The db doesn't exsist on the destination and there is no shortage of disk space. Any help?

pse post the full error with error number and description.... BTW it is always better to use Backup/restore to transfer database ...

Madhu