Just an observation-
USR external faxmodem (model 5686E) @ $99 USD works ok for Aces High. I have purchased two in the last two months. My connection improved significantly, but stability is sometimes questionable. The same modem will not allow me to play DoD.
USR internal faxmodem (model 5699B) @ around $25 USD works ok for Aces High. I have purchased three in the last two months. Although the internal modem gives a slower connection speed, stability is not a problem. The internal modem does allow me to play DoD. Go figure.