This is the third thread on the same subject in a few months. I dispair sometimes. Look into the forum and search for CFD, for heavens sake! Ehem.
I haven't reviewed the links I gave, I know they exist. Please, tell me if they are worthy of anything. In my page at
http://www.ciropabon.co.nr I give the same links.
Windows? Ugh.. Well, do you have at least a Mac? In that case you could try
ftp://ftp.ncsa.uiuc.edu/Mac/UIFlow UIFlow for Macintosh. It rocks, I've toyed with it. I'm into car dynamics simulation, not into CFD, so excuse me if it's not good enough. I think Tomba should open a CFD links page.
You can find the links I've found at:
viewtopic.php?t=3638
And this was the second thread:
viewtopic.php?t=3836
This is also the third time
I ask humbly for you to post some comment on the links, instead of saying just thanks. Well...
About the comments on cracking the software, well, again, ugh... Let me tell you I won't contract you. And get off my lawn!

(that was a joke, in case you did not get it).