I have a little problem with SCCT

[NeO2K1]

Hello! I have SCCT (multi5-eur) iso with exact DPM or RMPS...I have an external USB DVD/ROM, but is a DVD Writer...is Samsung...

I follow the steps in order to play the game, i unplug the ide drives (i have 2 dvd writers more: Nec and Philips), and i only have now USB DRIVe, and mi 2 HDD...

If i follow the steps of gamecopy world, the game doesn't run...and if i put my game (the iso before with exact dpm) the game doesn't run!
The error is the same in 2 cases: Please change DVD to another CDROM...
Inclusive, i burn the miniimage of the gamecopyworld, and SCCT doesn't run!

Anyone knows why? Am I an incorrect way?

If my post is disagree with forum rules! Please sorry!