Can one slapd have two roots?

[Thomas Gagné <tgagne@wideopenwest.com>]

I home I have my own dc=home,dc=lan.  I was thinking I'd like to set up 
some other ones for a few corps. I'm involved with.  Can I do that with 
one, then just change my baseDN as necessary, or must I run separate 
slapds, one for each?

If you can do multiple, does each one require its own Manager account?  
Is there such a thing as a single Manager account for all the roots?  
Kinda like a DN of "cn=Manager" that write privileges to everything on 
the slapd?