1.5 removes Tages? Hmm.
Yes it does. You might still want to uninstall the Tages drivers after that, though.
I have W7 64 bit. I installed the game and managed to get it to run by downloading new Tages drivers off their website. I tried to install the 1.4 mega patch but it insisted I register, so I went through all of that, including a painful fifteen minute wait for the confirmation email. Finally I get to patch 1.4.... no. I get to just about the end and it threw up a CRC error. Re-downloaded the patch, tried again and got the same thing.
The official Witcher website is notorious for giving corrupt downloads for large patches. The real patch is about 700MB or so, so if yours isn't that big, it's corrupt. You're actually better off downloading it from fileplanet or somesuch than from the official site. The registration is optional, just download the file from a mirror site and then run the .exe as an administrator.