#2 - May 28, 2010, 1:11 a.m.
As Tengianna noted, only new accounts can be recruited through the Recruit-A-Friend program. As a result, I'm afraid you will be unable to recruit your friend's inactive account. =/
You could always recruit him a second account, though! Or perhaps invest in a Scroll of Resurrection (
http://us.blizzard.com/support/article/20592)?