I have a major problem that I need help on, I hope someone can help!!

I have an Oracle system that is networked on Windows NT. Part of this system has some drill down graphs (ie barcharts that when you click on a bar bring up another layer with another graph on it).

The graphs work fine on the PC that I'm using, though not on the users PC. However, everything else does. Firstly, all login authorities are the same, so there's no problem there. I have checked the registries and even copied the entire Oracle registries from my PC and imported them. I have aso tried a complete un-install/re-install of all the necessary Oracle components, but still no joy.

Has anyone had any similar problems or got any bright ideas, because I'm at my wits end! Anything, anything at all!!!