regarding an earlier thread which was about adding more RAM to my sytem and realising i needed to upgrade from 32 bit to 64 bit. I have 3 different images of vista 64 bit,two which are preactivated and one which is downloding and is meant to be an untouched version.I like the sound of using this one. i have been wondering about the code for my new 64 bit OS and then i read many folk have used there 32 bit codes and used them on the 64 bit. I would like to ask is this possible ? I allready have my OEM files for the 32 bit activation, so i guess it would just be a simple job to add these to the 64 bit file structure. Also what files would i need to get rid of from one of those preactivated vista dvd's. I guess these have a app rset to run at install,a boot loader...dirty !!!!!! the file size of tyhis disc is over 4 gig big..seems a lot to me.