http://www.mmorpg.com/cov_trial.cfm
You havta sign up with one of their free accounts and they give you a code. The code can be used to upgrade your current COH account if you have one or create a new CoV account.
The nice thing is that if you upgrade your account, then it opens CoH for you for 14 days too so if you're feeling nostalgic about your old heroes, then all the more power to ya.
I'll be trying out CoV =)