ok....before i read that you cant you the NO_CD thing....i did.....couldnt join games etc etc etc
so i closed it down....got offline......undid the NO_CD patch......and then tried to launch game to check things out....got the following message:

"mechwarrior mercenaries has caused a problem in
DPLAYERX.DLL...mechwarrior mercenaries will now close"

could the no-cd thing caused a problem in this folder???.......i ran DXDIAG....no problems listed anywhere......i even re-downloaded DX9.0b......didnt help...if anyone has some insight on this i would greatly appreciate it
i mean if i have to go through the whole install thing again ....i will.....at least i know the proced. to use this time......just want to avoid it if i can

SPIDER®

Unless the no CD crack did something to alter the system files...

First thing to look at is if you have any games that give you the same error.
Did you update any drivers? Specifically video? And which video card?
When did this problem start?

Which OS are you using?