I use good old bog standard MS Publisher to create a lot of my designs. I then copy and paste into MS Paint and convert to either .jpg or bitmap from there. I love its natty nudge feature especially for welded words.

The other program I use is Corel Presentations. I can convert to jpg or bitmap directly from this program.

In fact the Graphtec chaps said that I didn't need Designmaster as the programs I use were good enough - very honest of them I thought!