How to remove crawl errors in google webmaster tools

[NoahGlaser78]

In my webmaster tools account it says that I have almost 8000 crawl errors. Most of which are http 403 errors

The urls are

http://legendzelda.net/forums/index.php?app=members§ion=friends&module=profile&do=remove&member_id=224

http://legendzelda.net/forums/index.php?app=core&module=attach§ion=attach&attach_rel_module=post&attach_id=166

And similar urls. I recently blocked crawl access to my members folder to remove duplicate errors but not sure how i can block access to these kinds of urls since its not really a folder thing.

Any idea on how to?

[Nick_Ker]

In Webmaster Tools, go to URL Parameters under Site Settings.  You will probably see some of the parameters you want to block in the list.  Click on Edit next to a parameter you want to block like "?app=members" and then choose the appropriate settings to prevent Googlebot crawling.

I don't know if that is the preferred way of doing it, but that should block those dynamic pages.