I've got the same problem with printing from GGV. Something small appears in the print queue but nothing gets output. This is from a default installation of RH8.
The problem with Evolution crashing when you try to print HTML email has been fixed by a recent update I think. Go and download the latest version using Red Carpet. It's not related to the GGV problem.
The only way I can print PDFs at the moment is by opening them in XPDF, using the print icon to output the file as PostScript, and then sending the PS file to the printer using
Perhaps the GGV problem will be fixed in RH9.