Here is the situation:

I have an iMac running Lion, with Parallels installed to run Ubuntu 11.04 and there, trying to install Neverwinter Nights 1.

After look for a lot about direction, I put it to work but very poorly. It isnt update (don't know why even having installed the 1.69 update) Video quality is ok but it is slow and I did run it before 2 or 3 years ago, almost same cenario, only with older versions of each app, and it was so fast as it should.

How can I fix that?

Thnx in advance!