A. Which computer system are you using.
B. 64 bit software will normally not work on 32 bit.
C. and 32 bit will probably not work with 64.
EBAY:
Old versions of software are just that, old software and probably used.
Chessmaster- You have to be carful with the Windows version Chessmaster.
Some versions may not work on your computer. But if the computer is relatively new, Chessmaster does have patches on its software.
Although Chessmaster indicated in the manual that it has a feature to accept pgn import, it does not.
Shredder is also available at the same or lower price.
When checking Amazon the same store may offer the same software on two different pages. I use a Macintosh, with Windows XP installed. I purchased
Fritz (the latest version) from wholesalechess.com, saving 15 to 25 dollars.
I used a best price from Amazon.com. Wholesalechess will match or beat the price.
See
Fritz 11 Chess Software for PC - Wholesale Chess
This is the Fritz page on amcom:
Amazon.com: Used and New: Fritz 11 for Windows (DVD)