był już taki wątek -> 
http://pdaclub.pl/forum/g900/g900-jako-modem-do-pc-ta/, tylko, że potrzebowałbym mojej tośki jako modem wifi do starego laptla, i znalazłem takie cos:
At first, thanks to the forum member tsinghe, who found out this feature.
Here is a manual describing the process to make your G900 work as a External Wi-Fi Adapter for you PC:
A. PPC Settings:
    Modify this values in the registry. You may copy, paste and save it as REG file
    [HKEY_LOCAL_MACHINECommConnectionSharing]
    "PrivateInterface"="RNDISFN1"
    "PublicInterface"="CheetahGSP1"
    "DisabledOnBoot"=dword:00000000
    "EnableAddressTranslation"=dword:00000001
    [HKEY_LOCAL_MACHINECommTcpipParms]
    "IpEnableRouter"=dword:00000001
    Restart
B. PC Settings:
    Forbid the usb connection of ActiveSync.
    Plug the usb cable into PC and G900, a new connection will appear on your PC.
    Set like the following in the IP property interface of the connection made by G900:
    IP Address:169.254.2.2
    Subnet Mask:255.255.0.0
    Gateway:169.254.2.1
    DNS: 168.95.1.1
And that's all!no, ale to nie bangla - kiedy zmieniam rejestr WIFI w tośce wogóle nie chce się włączyć i do tego ma problemy z połączeniem z AS. Ma ktoś jakiś pomysł?