I have eventually found out the solution to this problem.
It turns out that this is a known bug with Campus Manager ver 4.0 through to ver.5.1. For details see:
http://www.cisco.com/en/US/docs/net_mgmt/ciscoworks_campus_manager/5.1/release/notes/cm51rn.htmlBug ID CSCsa80409
Campus Manager Telnet and SSH do not support Windows 2003 and XP clients
Telnet and SSH do not launch from the Campus Manager Topology Map.
This occurs on Windows 2003 and Windows XP clients.
Workaround:
None.