I've been reading about malware in a few different forums, and a lot of people recommend installing several anti-malware apps. But if you do that, don't you have to make sure they're not all in the Start menu, so they don't run all at once and collide?
Yes, you are correct. You have to do your research. Typically a GOOD program will tell you what won't run well with something else. But also don't overload the computer is a key piece of advice. Use a 1 good anti-virus program, 1 good firewall, an anti-malware program like SpywareBlaster is excellent, mainly because it does not run in the background but does block, malware, spyware, questionable ActiveX programs and has an excellent Restricted Sites portion that DOES stop you from going to a known bad site in the first place. Install one or two scanner programs, MBA-M and Spybot are very good. SuperANTISPYWARE does a good job also. Use these programs as SCANNERS and use them at least once a week.
A key part of security is use proper settings in your browser...Allow 1st party cookies, BLOCK 3rd party cookies and allow Session Cookies. A Session cookie is a cookie that a website places on the computer to allow you to navigate their site so that you can go from page to page easily while using the site but once you leave that website the cookie goes away.
Reduce the size of disk space to use for Temporary Internet Files …