I'll admit the one thing I miss on my Vogue is the wifi...
I actually didn't know the GSM and the CDMA versions of the HTC Touch were that different so when I switched from a local GSM provider to a CDMA one I thought I was getting a Touch with Wifi....
But who cares... I have unlimited Data and I searched around and saw that a microSD wifi card has been announced...
Good luck if you go forward with the h/w hack.... Better your phone...