Hello Bob,
Firstly, a very warm welcome to WPF, glad to have you aboard!
I use a slide scanning attachment on an ordinary flatbed scanner, but I wouldn't recommend it for quality or speed. If you have lots of slides to scan, it is probably worth investing in a dedicated slide scanner. I have no expertise in such things, but I'm sure someone will be able to recommend one soon enough. Member Nirofo springs to mind.
Hang on, I recall this has been asked before. A quick search has found this thread:
http://www.worldphotographyforum.com...ead.php?t=1010
Regards,
Duncan