anyway to choose depth of [forumtitle] for certain section?

i have some forums which are


say
Main cat
>sub cat
>>sub of sub cat
>>sub of sub cat
>>sub of sub cat
>>sub of sub cat
>>sub of sub cat

now i can only seem to get have urls to mydomain.com/maincat/subcat/subofsubcat

or for posts like this

mydomain.com/maincat/subcat/subofsubcat/subtest.html

is it possible to make it

mydomain.com/subcat/subofsubcat/subtest.html

sorry if you dont understand :P

vBSEO doesn't support "partial" forum path in URL, it can only be either forum title or full category path.