Hey Chessroshi
That seems to be a big problem with Chessmaster being designed for small hand held units. It's great on my PC and Laptops, but you loose a lot when it's on the DS, etc. Although the PSP version is great for what it is I was looking at the Palm Hiarcs and that looks great. I like the idea of buying a Palm on ebay and using it for chess.
I think the best combination of price, features, strength, and ease of use for a handheld is to buy a Palm Z22 on eBay and load it up with Palm Hiarcs 9.7. I don't ude the PDA for any other reason except chess on the go. Check out these links
http://www.hiarcs.com/palm_hiarcs.htm
http://blog.chess.com/likesforests/happy-holidays--palm-hiarcs