Blog problem

Jul 23, 2014 at 5:07 PM
We recently installed a new ISAPI rewrite onto our server and for some reason now are getting this message:

Could someone share with me what the Rewrite lines need to be as I think we may have wiped the old ones with the old rewrite install?

We have this at the moment in one of the lines:
RewriteRule /post/(.*?) /post.aspx?slug=$1 [L]

I believe we also had one for the category as our categories would load like this: but we don't have a rewrite for that. What should we be sending this to?