I haven't talked to MSN yet to find out what equipment they are using, will do that tommorrow during noon because right now they are swamped with calls since its the evening time here and everyone is at home.
I've tried various drivers since the Hayes Optima 288 VF.C + Fax works with pretty much any Hayes 28.8K modem drivers and also works with the Standard 288 modem Win98 driver, didn't have any luck with connecting beyond 14.4K. Did find a nice init string that gives the modem a much steadier packet transfer rate, so atleast I have that which is a lot better than the transfer rate I was getting before.
As it stands right now, it looks as though this may be the end of the line for the trusty Hayes... will know for certain tommorrow, *IF* the MSN people know what equipment they're using (I've got atleast a 1 in a thousand chance of getting someone that knows what they're talking about

).
Thanks for the advice Skuzzy, appreciate it!
-SW