Making subtle references to illegal software sites doesn't make it any less against the
rules than if you just said it out loud. Posting about downloading software illegally is against the rules, actually downloading it is against the law, and it makes companies like adobe lose money, in turn people lose jobs.
I am sure by the wording of your post and the fact that adobe does not sell a legal portable version of any of there software you too are suggesting that you can give him a illegal copy of photoshop. That is against the rules please don't talk about it here.
As for your question adobe offers really good discounts to students and educators, as well as some schools offer it to their students for cheap or for free. The adobe student store can be found here:
http://www.adobe.com/education/students/ also for people who are less advanced adobe sells fireworks which is much cheaper than regular photo shop found here:
http://www.adobe.com/products/fireworks/?sdid=FNNTC&. Furthermore if you want to just play around download the 30 day trial.
Free versions such as gimp are also available.
If I were you I would look online on sites such as ebay or other sites selling older versions of photoshop (CS4 CS3, etc.) up to CS3 they are pretty much exactly the same and cs2 is not much different.
Hope I helped, and now that the question has been answered maybe this should be locked to prevent more references to illegal software downloads?