wow what a lot of words I bet Erins head is spinning now.
Did anyone answer her question? Or did everyone lose the plot by the 6th page? I know I did.
Erin
Defragment your hard drive, run a good virus and malware scan. try
http://www.trendmicro.com/hc_intro/default.asp its an online scanner and its free.
If you live in England Can I suggest a very good company if you want to buy a new computer. the company is called "Scan " they have been in business 18 years and I have used them for all my bits because I build my own. They build systems for various applications, take a look here
http://3xs.scan.co.uk/ They are a no nonsense no pull the wool over your eyes company. and best is if you have problems they will sort them, they even do remote access into your machine and sort things out if you arent technically minded.
And if you want a future proof machine buy 1 with dual core processor, Intel or AMD, 1 Gig of memory, and as big a hard drive as you can afford.
Good luck
billybob