More computer trouble for the Pheobster

For some reason this computer will only let me access certain websites, so I can go on some but not others. I can't check my email or the balance on my card...I think it won't let me access secured sites.

Has this happened to anyone? Any suggestions?

There's a Windows repair-tool called System Restore. Look from your Start menu in this order:

Start --> All Programs --> Accessories --> System Tools --> System Restore

System Restore resets Windows XP to how it was at an earlier time. Try restoring XP to a time before it started going weird.

See how the internet works then.