For my wieless under Vista I just used XP drivers and they worked fine. You have to point device manager to the drivers and use the built in Vista wireless controlls (which sometimes are alot better than the ones provided). It may just be that the install program is failing as it does not know what Vista is and thinks its an invalid O/S.
If you can extract the drivers from the install program point Device manager at them and see what happens.
BTW for simplicity sake the drivers should be signed.
-edit- WinRAR will unpack the exe file for you and allow you to point Vista at the folder to install the drivers. The drivers look like re-written Linksys drivers as there are a few references to them in the inf file.