I've installed this and it works great.
There's only one change that I can suggest as an improvement: You have the
visitors_xh phrase (the phrase that says by default "Members who visited in last X hours") coded to be underlined. This makes it look like a link, but it's not. Other non-linked boxes down there, like Statistics and Today's Birthdays, are not underlined, so why does this one need to be? I've changed it on my board, for consistency (and thus making it seem more integrated) with the rest of vBulletin.