There's always an ebay market for used PDA's if you don't want it any longer, and those expansion sleeves have retained pretty good value. RE that particular card...I'm not sure. You'd have to check to see if they offer any drivers for it. If your card is a "
3ComŪ Wireless 11a/b/g PC Card with XJACKŪ Antenna", it looks like it's only compatible with Win 2000 & XP. Your best bet, if you want to use wireless on this PDA, might be to find a cf wifi card that works. I use the Symbol Wireless Networker with my Jornada 568. I have a Linksys card that works as well that I will be posting on ebay in a while (just don't need 2 cards). These are only 2 examples. The
Pocket PC FAQ has some great info on compatible cards.
Here are the updates for the 3670. I believe an upgrade to PPC 2002 from the included PPC 2000 was available for sale from Compaq for around $30. Just looked on ebay and it
can be had for about $20 shipped.