Help needed!!

Hi i'm after moving home after a while away, mother has a P.C here, not the best but anyway.....

It's slow as xmas, i reckon it's from all sorts of crap my little brother and sister have been using/clicking on since she got it. Anyway downloaded Spybot and Smitfraudfix to try improve its performance. With Spybot i can run it but at the end it says i can't delete the items because i'm not the administrator or somthing along those lines, can't even run smitfruadfix after opeing it ''ACCESS IS DENIED'' comes up over and over. I could'nt download firefox for the same administration reasons and i tried to delete an anti-spyware application (that was stated as been spybot but wasn't,have to pay to use this one) and i can't remove it!

Anyone have any ideas?, im using the ''administrator'' account, is there any chance some malicious software is stopping me from removing/adding applications that could remove it?....

I'd reset the whole computer to factory setting if that would solve the problem, want to try running some things to try fix it, it's so slow its unuseable!!

Gadgetman496

What OS are you using?

Do you have any Antivirus program installed?

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