FWIW, font handing is KDE is miles beyond that offered by gnome. Such was the case the last time I checked, anyway. Using the KDE font manager you, can suck the fonts right off a windows partition and use them in linux, fwiw.
Are there gimp-print drivers for your printer? If so, I've found that cups+gimp print offers the best print quality by far. Cups has an html based config tool that I use for most all printer config tasks wich great results.
Cups is in the /extra/ directory on the slackware FTP site and is quite easy to compile youself as well.
Check out this website, if you have not allready, for absolutely everything you'll ever need to know about printing under linux:
You also might want to check out this page: