GMER will not work on Windows 7 64bit. There are some other rootkit detectors that will work on 64bit systems, like RootAlyzer, for example. But, to be quite honest, I'm not sure if there are any rootkits that can infect a Windows 7 64bit system. They would either have to use digitally signed files or be 'userland'. There may be some, but I don't know of any at the moment.
But this is not really helping you. So I think the best thing is for you to post what logs you have in the 'Virus, Trojan, Spyware, and Malware Removal Logs' section and just tell them that GMER would not run on your system.
Don't worry. The expert helpers in that forum will look after you.
Edited by marktreg, 06 May 2010 - 02:17 PM.