10 Jun. 2011
Apparently PAF allows for a Title field, which can be used for prefixes like Dr., but it doesn't seem to have a suffix field.
The help files say to just include the suffix (they use Sr. and Jr. as examples) as part of the surname.
I realize that this doesn't help with your suffix problem, but you should be able to do a global search and replace in the gedcom to convert the tag Prefix to Title.
Give it a try and see what happens.