how can i use $FIRSTPOSTID or any other hook on blogs ?

[magmf]

When my question is very simple

how can i use $FIRSTPOSTID or any other hook on blogs ?

there is any hook like this to blogs ? i need something like this.

[Floris]

Writing custom code for the hooks you can use in the blog is best to be discussed on vBulletin.org, the resource / customization community.

The first blog entry, and the following comments are handled by different templates, I also don't see a per comment counter. So I am not sure if this variable is available. You could try to print_r(); the $bloginfo array.