Ok, I tried, had some success, but still overall the Warplink drivers are simply not stable under Windows 2000 and an I-Opener... I seriously wish they would have been reliable... however begging Acer for support is likely as productive as begging the adapters themselves to work right...
I broke down, bought a Linksys Wireless AP with 4 port switch (802.11b for wireless) it's a nice integrated unit and was very familiar as it replaced the 4 port Linksys I already had.
For a usb adapter, I picked up a D-Link 802.11b USB adapter... unlike the Acer Warplink it really has drivers, and they work, the system doesn't crash... amazing eh?
I had the D-Link about a week earlier than the Linksys (just got the Linksys today)... overall it's been a pleasurable experience... I regret that the limited success of the Warplink really drove me to try to stick it out longer than was productive...
I have sustained almost a 200KB download using this combination (downloading the D-Link updated driver). This is certainly in the ballpark of a hardwired Linksys USB adapter... signal strength at about 50' through a concrete wall and up 1 level is about 40-50% the adapter still reports a 11mb connection (though I have my doubts, however am not certain if the relationship between signal strength and bandwidth is 100% linear).
If you are still trying to get a warplink driver to run with Windows 2000, I'd be interested to hear of anything that works... mostly as I've got half a dozen of these things laying around, however as time moves on it's very likely I'll be aquiring more of the D-Link (or similar) devices... note the DWL-120 is very similar in shape to the Warplink but is perhaps only 3/4 the size in all dimensions (perhaps even more like 60% with respect to thickness). It has 2 indicator lights and an external antenna which can be swiveled up and down along a single plane.