Hi Harry:
Let me add my welcome to RetouchPRO. You're right: There's a wealth of information here. Glad you found us.
While lower priced alternatives to Photoshop exist that provide varying degrees of restoring functionality, another factor to consider is "training"/"learning" resources. The low cost option here, of course, is tutorials from the internet.
I just did a search using using
www.google.com using the following keywords (number of hits):
* "Picture Window" restoration tutorial (16)
* "photoshop" restoration tutorial (1670)
Books are not nearly as inexpensive, but definitely can be a valuable resource. Books at Amazon.com
* Picture Window: 0
* Photoshop: 460
I realize there are many other keyword search combinations that may be tried and that a high % of search engine "hits" (or books) are probably irrelevant.
My point is not to bash Picture Window nor trumpet Photoshop, but to illustrate there is a wide, wide range in supplemental information / training available among the various image editing applications.
I would encourage you to consider assessing educational resources and costs in addition to program functionality and costs.
Also: If you decide Photoshop is your preferred application, an alternative to buying a full version of Photoshop 7 now is to get a back level version of Photoshop, for example, Photoshop 5.0, for less than $200. If and when you're ready to upgrade to a newer version of Photoshop, you'll be able to do so at a fraction of buying a full version of Photoshop 7 now.
Good luck in your search. Hope this helps...
~DannyR~