to show the total number of post from all sub-domains

Hi,

I would like to ask you if there is possibility use post indexer to show the total number of post from all sub-domains on WPMU.

I have 29 subsites on WPMU and with post index and recent post I show them on one page. Now I would like to show the actual number of post on all blogs. My Idea is: if post indexer grab all post from all subsites, there should be some number of all post Right?

So is there any code which I can put in widget or site to show the total number of post?

Thanks,

Radek