It could be a hardware problem that came at the same time as your uninstalling aol, but that's not likely.
I suggest you remove the modem from device manager, then reinstall as you did the first time. There's a good chance it will appear again.
Hope this helps.
i recently built a computer it was working fine i went to sell the computer and the modemn not working it was working fine until i uninstalled aol then all of sudden windows dont recongnize modemn its listed in the device manager but when you try to create a new connection in control panel the modemn not there im running windows 98 400/66 mhz cpu with 256 megs of ram with mmx technology and m,y modemn is agere pci v90 bitware modemn any advice would be appreciated,cause i dont want to restore the computer just to fix this