It sounds like your hardware may no longer be up to the task.
What are the specs of your machine? CPU, RAM, HD??
You might find performance better if you move to Windows 2000 instead. It's not as pretty as XP, but a heck of a lot better than the 9x/ME os's.
:EDIT:
Do a 'ctrl-alt-del' and check the CPU usage when starting a program. You might have your virus scanner scanning 'everything', or another program could be hogging CPU time.
What are the specs of your machine? CPU, RAM, HD??
You might find performance better if you move to Windows 2000 instead. It's not as pretty as XP, but a heck of a lot better than the 9x/ME os's.
:EDIT:
Do a 'ctrl-alt-del' and check the CPU usage when starting a program. You might have your virus scanner scanning 'everything', or another program could be hogging CPU time.