SPIT,
Firstly, to clarify.. you say you have some scanned onto disk, by which I assume you mean a HDD or floppy - in which case they are inherently now digital scans of analogue originals... for those that remain either as slides, negs or prints, a good quality film scanner will do the negs/slides but tend to be expensive (but you can sell on ebay once done for a good %age of what you pay for it!) and for prints any decent scanner (Epson, Canon etc) will do a good job...