This is a well-known problem with AOL software, starting back in 1999 with AOL 5.0. So if the AOL Wonk on the phone said they never heard of it, they were just flat out lying!!!
Basically, AOL software replaces several critical Microsoft system files with their own, and from then on the only network you can access is AOL's. (It even screws up your LAN access, if you have one.) The remedy is to reinstall/reconfigure all your network and dial-up properties. Sometimes you have to format and reinstall Windoze from scratch.
From Internet News - "Technicians of independent ISPs have been swamped by callers asking for help to return their personal computers to regular programming throughout the U.S. In order to repair a computer's dial-up properties after installing the AOL 5.0 upgrade, users must re-program their device manager settings."
Several class action lawsuits have been working their way through the courts for the last three years. In fact, these stories are so old that none of the links I had bookmarked about it were good any more. But here's a few I've found that are still working -
[url=www.wired.com/news/politics/0,1283,34063,00.html]Wired Magazine[/url]
[url=www.internetnews.com/isp-news/article/0,,8_315391,00.html]Internet News[/url]
[url=www.internetnews.com/isp-news/article/0,,8_216641,00.html]Internet News[/url]
[url=www.internetnews.com/isp-news/article/0,,8_310561,00.html]Internet News[/url]
[url=www.time.com/time/nation/article/0,8599,38609,00.html]Time Magazine[/url]
Consider this a learning experience about AOL.
One thing that everyone should keep in mind is that you don't need any "special software" or the ISP's CD-ROM full of pre-branded and configured, spyware-laden bloatware to access the internet with a Windoze box. I've set up many "naked" systems. After a call to the ISP to sign up, get a userid/password, the name of their mail servers(s), and a local phone number, I merely create a Dial-Up Networking connectoid, then fire up Internet Explorer so I can start downloading Netscape and Eudora.
This isn't Rocket Science. I hate to say it, but I am in no way a "computer genius," just someone who has been burned a few timed and learned by my mistakes.
Kind of like shamayim here - ya learn, ya fix it, and move on.