Adaptive Server Anywhere 7 SELECT Problem with ADO

I have a Problem with getting recordsets from Sybase Adaptive Server 7
Database. A SQL SELECT Satement like 'Select * from mswin' occurs an
error: Table or view not found: Table 'mswin' not found.

But this table exists definitly. I coded it before with BDE and this
easy select statement was ok.
Even it works with VB/ADO. But not with Delphi 5.
Any suggestion?

System:
Win NT4 Workstation SP6A
Delphi 5 with Update Pack & ADO Express Updates
MDAC v 2.7

Thanks for help and please excuse my bad english.