I did a search on my site and found that search results are being displayed for both my blogs. Others have posted to MT forums about this issue, wondering how to exclude a blog.

I, on the other hand, would like to include both but have two different headers on my search results page so it's clear that some results are from one blog and the other results are from the other blog.
...Ok, I figured out how to do this. I just needed to use the MTBlogName variable within MTBlogResultHeader in my default.tmpl search template.
HOWEVER, now I'd like to control which section appears on top. That is, I want results from blog X to appear on top and blog Y on the bottom, and not the other way around. Any way to control that?