Import Users and profile fields

I'm working on an installation for a customer who has a list of already established members and they want me to set up profiles for each of them, all 280.  Their list of info is in an excel file and i could easily get it into a comma delimited file, or whatever format is needed... however, i have found no plugin or method for importing contacts or members from such a file.

Any advice/ideas?  I appreciate any response(s).