Yeah, ok not EARTH shattering news - but.
After updating my Logitech Cordless mouse drivers, I now have the FORWARDS feature too. This USED to be an option with WinME, but not for XP - well it might have come recently, but I wasn't aware.
So just a nod to those who DO use the LogiCordless Mouse Man, and wanted FORWARD, say for the INTERNET, it is back on!