Malwarebytes is a very good program. its recommended by many helpsites along with superantispyware and ccleaner. Common sense is a good way to prevent infection, but once you have it, you need programs like these to help the novice remove the threats. the fact IE is not letting you download anything is a sure sign of an infected pc. you have a few options. 1, download the relevant programs on a seperate computer, then transfer the files using USB. see if they will then install. 2, complete reinstal of the operating system using a repair install from your system disk supplied with the computer. this will keep all your files intact, just reinstalling the operating system. i advise a backup of any important data before you do this tho, just in case. 3, destructive reformat. this will completly wipe the drive leaving the laptop as new, with a new, clean operating system. all programs you added after you got the laptop will need reinstalled. with options 2 and 3, you will need to download all windows updates again, and this will take time on an XP machine. If sleepy is a bedlington resident, i could offer to take a look one night if needed... there are several programs i'd recommend to help clean up if option 1 is the way you want to go, and could download them for you and put them to disk, if its easier, or get someone to do it for you. any further help/advice, you know where we are! even if it is conflicting!