I've got a DWL-650 (no +) which NetStumbler detects on WinXP Home. The back of the card says it's:
H/W: A1 F/W:2.0
(Note: According to D-Link's Website, H/W versions A1 and L1 are identical, but the earliest A1/L1 cards were released as A1, then it was soon changed to L1.)
I did the default setup with D-Link's CD. It installed driver version 1.64 and not the utility. (The Quick Start Guide says to use the Windows Zero Configuration Utility to configure the card. Huh?)
I can run NetStumbler and the status bar says "No APs Active", which is of no surprise, considering I don't have an AP. I bought the card for school and I have a wired network at home.
Here's an interesting point: Disabling the card in Network Connections (not Device Manager) will cause NetStumbler to say "No wireless card found". Re-enable it - right back to "No APs active".
NetStumbler's About... is the same as truckmotor's but I have driver version 1.64.
Windows will allow me to change a number of the card's settings through Device Manager. Should I bother to adjust any of these?: Antenna, Channel, Data Rate, Network Type, Preamble Mode, RTS Threshold, Select SharedKey Index, ShareKey1, ShareKey2, ShareKey3, ShareKey4, SSID, WEP
I find it interesting that D-Link neglects to sign their drivers as WHQL Certified.
When I get a chance to sneak the laptop (Compaq Presario 730US - it's very heavy) out, I'll take a drive around the neighborhood (and possibly a few others in my area) and see if any APs are detected.
I think it might help in WinXP if you double-click on the Wireless Network Connection icon in the System Tray, click Advanced... and remove all Preferred Networks. That way, Windows won't lock to any network when you're trying to stumble.