3ds license help

Ok I have an Issue, I had 3ds 2009 downloaded and working perfectly, and I tried to install a cracked version of vray, now my license doesnt work and when I turn on 3ds it asked me to activate so I go through the process like I did the first time and it just keeps asking me over and over to activate it, so I tried reinstalling it and using a different serial but the activation screen pulls up the old serial, is there a way to remove the license so I can make a new one? or is there another way around this?
Answer #1
regedit it?
Answer #2
ok using regedit I was able to change the serial it was looking at but now it just gives me a request to activate it every time I start it, I’m using the activation gen and software from this post… http://www.google.com?t=1383959&highlight=
Answer #3
to be more specific, it gives me a message saying thank you for activating etc etc then when I push finish it just reopens the activation window
Don't double post ~
Please use the edit button when ever possible
Answer #4
Moving
Answer #5
use Your Uninstaller on the highest settings to remove it completely, then install it again with the new serial.