You can install the beta version of Intrepid (or at least test it on the live CD) if you want. It should be pretty stable now. Intrepid comes with a lot more wireless drivers out-of-the-box, so there's a decent chance that your card will "just work" under 8.10, especially if it works in Mandriva.
I tried the ndiswrapper in 8.04 - 64 bit...dead end!
I want 8.10 to come out to see if it works out of the box. Vista is awful. Right now Im on Mandriva. However, I hate KDE 4 and Im too lazy to put Gnome just to install Ubuntu in less than a week over it.
You can download the Intrepid beta ISO from here.
If Intrepid doesn't work and you want to try ndiswrapper again, please tell me the output of:
lshw -C Network