just recently my computer will not allow me to access certain websites such as classmates.com, it goes straight to a search page and says this url cannot be found. i checked with someone else and the website has not been down. my computer also started freezing every few minutes for about 20 seconds then resumes. when i enter an address, my computer hangs for quite awhile then it will access the page. i have windows 2000 professional and internet explorer 6.0. i do not know alot about computers, so any help will be appreciated.