Intel ProSET Windows 2003 SP2 - Redux

Further to this, advice from intel is:

For Windows* XP and Windows* 2003 Server:

1. On the target system, click the Start menu and click Run.
2. Type dcomcnfg in the text field and click OK. The Component Services Console Root window will open.
3. In the left pane, double-click Component Services, Computers, My Computer, and DCOM Config.
4. In either pane, right-click NCS2Prov and select Properties. The DCOM configuration properties window will open.
5. In the NCS2Prov Properties window, click the Identify tab. Change the user account to "the launching user."
6. Click OK to exit the NCS2Prov Properties window. Close the Component Services window.

This seems to resolve the issue (when viewing from remote desktop) far more elegantly.