I use Paintshop Pro 7. It opens lbm files with out any prolbems.
Check EBAY:
http://cgi.ebay.com/Jasc-Paint-Shop-...QQcmdZViewItem
You can find something affordable and PSP7 was one of the best versions and the newer versions really only added new Web design applications.
You just need to use the right palette and shape pics to the correct size.
Here is an old document from Steel Panthers 3 era I used to learn. It gets you used to the basic process.