The gibbs software is available on the HGMP-RC computers. You have to make some assumptions, but then it works great. You can pick up the original from ncbi.nlm.nih.gov - it runs on assorted Unix machines. There are various programs for finding repeats, some of them are specific to particular types of repeat. If you have X-windows, then the dotter program should be one of the first you use.
Dotplot programs are excellent for showing many kinds of repeats.
If you do not have X-windows, hassle your local computing people to get this for you and you colleagues.