> 'This will refuse/accept all zip files in .com addresses:'
> www.*.com/*[path].zip
> My question is what is the difference between that and 
this 
> version I put together?:
> www.*.com/*.zip

The example could be better, as I should have written
www.*[path].com/*[path].zip

This one will NOT match:
www.foo.jp/mirrors/bar.com/foobar.zip

> so I see a little difference...but is there a realistic 
> example?
Yes:
<http://www.foo.jp/contents.shtml?dom=www.foo.com&file=bar.zip&page=1>

This file will be matched by 
www.*.com/*.zip

BUT not
www.*.com/*[path].zip

and anyway this one is better:
www.*[path].com/*[path].zip

and will prevent to get
<http://www.foo.jp/contents.shtml?dom=www.foo.com&file=bar.zip&page=1>