Crawler filters for attibutes contained in URL

I would like to use crawler filters to filter URL's which contain concatenated attributes. Can anyone advise the correct syntax? For example:

http://10.64.0.33/Metadata.asp?size=2&cat=925

I would like to filter any URL containing the attribute size=2 from the result set.

Or http://10.64.0.33/Content.asp?mode=texton&id&print=1 I would like to remove this URL based on mode=texton or print=1.

Thanks for your help!

Marc