My dell craptop is in critical condition some1 pls help b4 it dies on me

[sassycassy618]

Hello everyone! Hopefully someone can help as I would GREATLY appreciate it! Okay, so my friend downloaded limewire on my laptop w/out permission and after discovering I could get music I decided to keep it . Well, I, all of sudden got a virus and I imagine it was from one of the files I downloaded. So I then deleted the files and unistalled limewire. Limewire started to try to open itself but couldn't and in turn this white error message box about not being able to run limewire and java and it has x amount of memory appeared along with a grey error message box that said rundll.exe on the top and some other verbiage [forgive me I cannot remember what it said, as I am not at home ] and now internet explorer will not open. I do not have an antivirus software [more stupidity, i know ] and was wondering if someone knew of anything I could do to fix my hellian of a laptop. Thanx in advance folks!