kaylasdad99, you’re confusing several things that aren’t actually connected. It’s not your fault. Microsoft has chosen some spectacularly confusing names for things, and the purveyors of electronic junk mail have found every hole there is, apparently!
First, MSN Messenger (some versions of which are labeled Windows Messenger, instead) and the Messenger Service that’s included in Windows are completely different things. The MSN/Windows Messenger is an instant-messaging package that let’s you carry on a conversation with someone who’s also online, instead of trading emails. It’s not implicated in any way with popups, spam, adware, etc. There’s no reason to uninstall it.
Second, when a spammer takes advantage of the Messenger Service (NOT MSN Messenger or Windows Messenger), what you get is a popup box that has just plain text in it - no pictures, nothing that looks like a typical web page. Turning off the Messenger Service will get rid of these (I’m not even sure it exists in Win95).
Finally, there are true web popups, which have the same kind of content as other web pages: pictures, color, various fonts, etc. These involve a web site or adware causing your PC to launch another Internet Explorer window containing whatever it is they’re trying to sell you. The fact that you’re getting these when you’re on the SDMB tells me (and other who’ve posted here) that you’ve got some adware running on your PC. The SDMB itself doesn’t hit you with any popups, so it’s coming from elsewhere.
So, somewhere along the line, you’ve managed to install (probably without realizing you’ve done so) some software that scans whatever you’re looking at on the web, picks out some keywords, and links you to various advertising websites. A free program like AdAware or Spybot will clean that off your PC.
Last but not least are the more normal types of popups. When you visit some websites, they figure that you’ll also be interested in some other “great deals,” and second or third IE windows will appear, encouraging you to buy something, visit another website, whatever. There are a bunch of popup killer packages out there (search these boards or Google the web) that will largely prevent these popup windows (some of them free), including the Earthlink software you mention.
You will soon run into trouble running packages like AdAware, Spybot, or the popup blockers on your PC, if you haven’t already, simply because fewer and fewer packages will behave properly on Win95. Your PC might tolerate an upgrade to Win98, but certainly nothing beyond that - too slow, probably not enough RAM, etc. Time to save up your pennies for a shiny new machine!