Suggest that if there are not too many, you may find someone who knows someone who may do it for the pleasure of it - ie for nowt. The resulting large files will need a Zip drive or similar to get them home to the PC you are going to work on. I would write the files to a CD ROM; that's an easier and cheaper way of transporting them.
There are companies that do this kind of work but you will buy an operator's time and that could be expensive.
I have a high resolution transparency adapter suitable for radiology work for my scanner. My son-in-law is the radiologist and put me up to it. It's not that expensive once you've got it (ie no running costs) and I find it worthwhile to have. But, like the main scanner, it does spend long periods just sitting there not being used...
If you're going to scan 35mm slides you've got to use a very high resolution transparency adapter to get the number of pixels you need to enlarge the image enough to make a decent print. Work round solutions such as projection, photocopy to plain paper first and then scanning normally etc are not likely to give you that.
Oh, an afterthought. I think one of the photocopy shops (Copyman) in my high street has a machine into which you can put 35mm slides and get a colour print out of it. It's a self-serve machine so no operator's costs. Why not go down to the High Street and ask about?
[ 20 October 2001: Message edited by: fobotcso ]