Hi,
look at some info about SEH. From what I remember at FS[0] is pointer to SEH handler structure (one dword is addr of SEH routine and other is ptr to next similar structure in chain). Olly will catch the exception and lets you handle it or pass to program - I suppose that you should pass it because the SEH won't be executed. Looking at the FS[0] struc lets you know where the SEH routine resides so you can try to breakpoint it. I'm not sure if olly is capable of doing this; if not try SICE, it can do virtually anything.

Good luck,
least