The Logisys multi panel has those I think (check jab-tech.com or svc.com), but it may be overkill on feature (fan controller, flash card reader, ports, etc... Or you can go to
http://www.frontx.com and build or buy your own. The sell just the cables that you can mount in a hole in a bay filler plate...
Or you could just get a PS/2 port extension cable (aka PS/2 keyboard or mouse extension cables) and bring it to the front underneath the case probably the cheapest option.
.bh.