New Problem.....PS Guard

Sorry I am contacting you guys so soon after you just help me fix my last problem. I was the person who posted the thread titled "2 Big Problems" last week and your solution solved me issues. However yesterday I became infected with something called PS Guard and a bunch of related threats. I followed all the steps in the Read Me First tutorial all day yesterday and it did not seem to rid the computer of this PS guard. I am currently contacting you in Safe Mode with Networking because if I boot in normal mode it seems to go to a blue screen that tells me the computer is dumping its physical memory and to reboot. It happens every time. Sorry to bother you guys again but I don't know how this happened. I have just been using job searching sites and have not used limewire since my last problem What is this PS Guard and how can I get rid of it?

 

I apologize for posting a different thread but actually I am experiencing a different problem. Yesterday I was using safemode with networking but my homepage was still yahoo.com, which is what I set it to after you guys solved my problem last week. Then when I was on careerbuilder.com yesterday all of the sudden I kept getting sent to this psguard spycheck page which kept asking me to run a scan and buy psguard spysweep. I couldn't get out of it no matter what. I rebooted into safemode iwth networking and still have the problem but I was at least able to get onto your site to post this new thread. I apologize for my confusion and will use the other thread from yesterday if that is what is best. Sorry again.