I uploaded the trial version. You tell them if you have Windows (which is what I have) or a Mac. You give them your email address and they will email you your key for the trial period. I have no idea how big the system is. I know that our computer has a very small amount of memory. And is running an older version of windows.
It was a piece of cake to get it loaded and added to CS3

. For a while I couldn't find it. It's in your filters (d'uh).
The first picture I tried to edit was taken with my old Canon so just 6.1mp (it was what someone termed a 'throw away' picture because it was waaay underexposed - it was that Pop picture I put in the POTD thread). I was able to edit it but when I would hit continue (for it to leave Topaz and bounce back into CS3) is when I would get the error message. It was 3000(something)x2000(something) in size. The Topaz admin. came along on their complaint board and told me that my picture may be too large for my memory. I reduced it down to 2975xWhatever the default is and it worked like a charm.
I also worked on a few from Ft. Lauderdale that were taken with my new Canon at 15mp and had zero problem adjusting them. I LOVE LOVE LOVE this program. I know you can purchase it in bits and pieces. The Adjust progam alone is close to $45 (pulling from memory), or you can bundle it with 2 other programs for $99. I don't know that I would have much use for the other two that are in the bundle.
Here is a 15mp picture that I reworked yesterday.
*Note, sorry that my tech-speak is terrible. I don't know how to put what I'm saying into great big word terms to sound all professional
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