The laptop is getting long in the tooth but I would suggest a fresh install of XP. If you can't do that then some system maintenance would be advisable. Download
CCleaner (It's free and a very good program) and run that. It will give your laptop a spring clean and get rid of unneeded files and it will also clean your registry as well. I would also recommend defragging your hard drive. XP's defragger is crap but the same company that makes CCleaner also makes a good defragger (It's called something like defraggler).