Use the Wiimote. 
I really think that's your only option right now other than trying Shake and perhaps recording motions with the plugin and then mapping the swing motion to a button on your keyboard.

I really think that's your only option right now other than trying Shake and perhaps recording motions with the plugin and then mapping the swing motion to a button on your keyboard.
Windows 7 RC Build 7100 x64 || Windows Vista SP2 x64
Intel Core 2 Duo E8500 (3.16Ghz)
ATI Radeon HD 4870 512MB (750Mhz/900Mhz)
OCZ Vista Gold 4GB RAM (2x2GB) DDR2-800
Asus P5QL-E
OCZ GameXStream 600W
Intel Core 2 Duo E8500 (3.16Ghz)
ATI Radeon HD 4870 512MB (750Mhz/900Mhz)
OCZ Vista Gold 4GB RAM (2x2GB) DDR2-800
Asus P5QL-E
OCZ GameXStream 600W
