It might be possible to connect over a WiFi network, but you'd first have to establish a partnership with between the netbook and the PC, which of course is a Catch-22 because establishing a partnership normally requires a serial or infrared connection first. There is, however, an unsupported utility for establishing a partnership manually by setting up the needed registry keys on both the CE device and the PC. That utility is called - surprise - ActiveSync Partnership Creator, and it requires the .NET Framework be installed on your PC in order to run it.
(I've tried this method, however, and ASPC ended up erroring out on the PC before completing the process.
) mscdex has this program, but his site
(
http://mscdex.game-host.org/hsr ) seems to be down at the moment. You can try PMing him here as he's one of our longtime members.