help with exporting my model

ok, so I made my first model today, and, lo and behold, I'm not able to export it from 3ds max 6..I'm using the impexpmdx script, but just no luck..the error I'm getting is "--Runtime error:Mesh vertex index out of range:1" Any help would be appreciated..actually, any help would be more than appreciated..if nothing else, at least keep my best wishes at heart. Hope to hear from you soon, thx.

Got same with max 5

Here's the first model I did with my 3dsmax 6..I know it's not great, but it was really so I could get a grasp of the program in general. Problem is, I think I messed up the vertices and junk, so after the labor of actually making it, I can't even import it..how sad..I need some MDL tutorials...well, you you go: