I put together something you can try if you want to. I uploaded a file named dwl650.zip here:
http://groups.yahoo.com/group/epods/files/Temporary%20Uploads/
If you're not a member you'll have to join. There's instructions in the zip file.
wlu.exe - put wherever you want
prismnds.dll - put in \ifc folder and in \windows folder
prismioc.dll - put in \ifc folder and in \windows folder
Wlu.cpl - put in \ifc folder and in \windows
Import dwl650reg.txt into your registry then soft reset. (I forgot the soft reset in the instructions)
It installs prism drivers for other cards as well. I hope it works for you - let me know.
Here's the contents of the dwl650reg.txt file:
REGEDIT4
[HKEY_LOCAL_MACHINE\Drivers\PCMCIA\D-Link-DWL-650_Wireless_PC_Card_RevP-DC64]
"Prefix"="NDS"
"Miniport"="prismnds"
"Dll"="NDIS.dll"
"PRISMIOC"="IPL1:"
[HKEY_LOCAL_MACHINE\Drivers\PCMCIA\D-Link-DCF-650W-1986]
"Prefix"="NDS"
"Miniport"="prismnds"
"Dll"="NDIS.dll"
"PRISMIOC"="IPL1:"
[HKEY_LOCAL_MACHINE\Drivers\PCMCIA\D-Link-DCF-660W-422B]
"Prefix"="NDS"
"Miniport"="prismnds"
"Dll"="NDIS.dll"
"PRISMIOC"="IPL1:"
[HKEY_LOCAL_MACHINE\Drivers\PCMCIA\Wireless-LAN_Adapter-10FC]
"Prefix"="NDS"
"Miniport"="prismnds"
"Dll"="NDIS.dll"
"PRISMIOC"="IPL1:"
[HKEY_LOCAL_MACHINE\Drivers\PCMCIA\Wireless-LAN_Adapter-5ABE]
"Prefix"="NDS"
"Miniport"="prismnds"
"Dll"="NDIS.dll"
"PRISMIOC"="IPL1:"
[HKEY_LOCAL_MACHINE\Drivers\PCMCIA\Wireless-LAN_Adapter-9081]
"Prefix"="NDS"
"Miniport"="prismnds"
"Dll"="NDIS.dll"
"PRISMIOC"="IPL1:"
[HKEY_LOCAL_MACHINE\Comm\prismnds]
"Group"="NDIS"
"DisplayName"="D-Link Air DWL-650 Wireless PC Card(rev.P)"
"ImagePath"="prismnds.dll"
"PRISMIOC"="ILP1:"
[HKEY_LOCAL_MACHINE\Comm\prismnds\Linkage]
"Route"="prismnds1"
[HKEY_LOCAL_MACHINE\Comm\prismnds1]
"PRISMIOC"="ILP1:"
"ImagePath"="prismnds.dll"
"DisplayName"="D-Link Air DWL-650 Wireless PC Card(rev.P)"
"Group"="NDIS"
[HKEY_LOCAL_MACHINE\Comm\prismnds1\Parms]
"AuthentAlg"=dword:00000001
"BusNumber"=dword:00000000
"BusType"=dword:00000008
"CardReset"="1"
"CardType"=dword:00000001
"CurrentChannel"="NONE"
"CurrentTxRate"="NONE"
"DecryptInDriver"=dword:00000001
"DefaultKeyId"=dword:00000001
"DefaultKeys"=" "
"DriverVersion"="0.2.0"
"DSChannel"=dword:00000003
"Encapsulation"=dword:00000001
"EncryptInDriver"=dword:00000001
"FirmwareVersion"="0.0.0"
"FragThresh"=dword:00000980
"FrequencyDomain"=" "
"IBSSInDriver"=dword:00000000
"InterruptNumber"=dword:00000003
"IoBaseAddress"=dword:00000280
"IoLength"=dword:00000080
"JoinedBSSID"="00:00:00:00:00:00"
"JoinedESSID"=" "
"Key1"=" "
"Key2"=" "
"Key3"=" "
"Key4"=" "
"LinkQuality"="0"
"MacAddress"="00:00:00:00:00:00"
"ModifiedParms"="0"
"NetworkType"=dword:00000001
"PCMCIA"=dword:00000001
"PollInDriver"=dword:00000000
"PreambleMode"=dword:00000001
"PSMode"=dword:00000002
"RTSThresh"=dword:00000980
"SSID"="ANY"
"StationName"="Client"
"Transceiver"=dword:00000003
"TxRate"=dword:0000000f
"VendorDesc"="D-Link Air DWL-650 Wireless PC Card(rev.P)"
"WEPFactor"=dword:00000003
"WepReq"=dword:00000000
"APDensity"=dword:00000001
"ATIMWindow"=dword:00000000
"CardRight"=" "
"DriverDate"="June17"
"Radio"=dword:00000001
"PSLevel"=dword:00000000
"ListenInterval"=dword:00000003
"KeyLength"=dword:0000000d
"KeyType"=dword:00000001
[HKEY_LOCAL_MACHINE\Comm\prismnds1\Parms\AP_List]
"Number"=dword:00000000
[HKEY_LOCAL_MACHINE\Comm\prismnds1\Parms\Utility]
"Now_Profile_Name"=" "
"Number_Profile"=dword:00000000
"PageAbout"=dword:00000001
"PageConfig"=dword:00000001
"PageIP"=dword:00000001
"PageLink"=dword:00000001
"PageProfile"=dword:00000001
"PageSecurity"=dword:00000001
"PageStatus"=dword:00000001
"WLAN_JUMP_TO_TAB"=dword:00000001