As mentioned earlier, there has only been two epic modules published so far. How high level of an epic module do you need? If your characters are in the low to mid 20s, there are a couple of standard D&D 3.0 modules you could convert.
The Bastion of Lost Souls is for levels 18 to 20. The dragon at the end of the module is rather nasty. Give him the paragon template, and he becomes a nightmare.
I believe issue #309 of dungeon magazine has an 18 to 20th level module involving the Githyanki. You could convert this module.
I understand your pain though. My gaming group is desperate for more epic level modules. Our DM is a lazy SOB, and he usually only runs modules he can find from publications.