Conditional rewrite on 500 response

Hello,

I have a standard rewrite matching a pattern and the action takes you to an .aspx page (easy).  Is it possible to create a conditional rewrite to a different .aspx page if i have a 500 runtime error response with that rule.  I guess like a error response redirect?  This is a final fallback plan, and i dont want to change the url structure. I hope this makes sense?

Thanks for any help,

Joe