The two common problem areas are PARASITES and IE issues. For PARASITES you can try SPYBOT, ADAWARE, STINGER and HOUSECALL. For IE, try IEFIX which you can find with google.com
When using either IE or MSN Explorer, a message will come up saying "Internal Error" then force IE or MSN to close. When using Mozilla I do not have this problem. I am using IE 6, have all the newest updats, and am using Win 98. Please Help!