First, I'm not sure this is good idea, because computer/monitor of the client may not support 800x600 mode (if the system is old).
Anyway, if you want this, read MSDN for ChangeDisplaySettings and ChangeDisplaySettingsEx API functions.
Plamen Ivanov
MCSD .NET Early Achiever and MCAD .NET Charter Member (VB .NET/SQL Server 2000)
MCSD (VB 6.0/SQL Server 2000)
VB (.NET) - what other language do you need in the whole Universe?...
