I just got doom 3 not long ago, and i was wondering what file extension do i look for, that checks the # of cds to install from. I know you place like files and folders together, but i dont know the file extension that will let me make it into one dvd. If you burn all 3 cds onto one dvd then the install will keep promting you to insert cd 2 or 3 whichever. I know there is a file to do it, i just cant remember the actual extension or name of it. If anyone can help out i would greatly appreciate it. Thanks in advance!