Promo clips

[jonnydeez3]

So I'm realizing I'm a bit slow, I rendered my movie overnight last night and totally forgot to add one of the WCM promo clips to it. Is there some way to have one put before my video without me re rendering the entire thing? I think its justified to have their ads in each video when they're providing such a service. Hopefully I don't have to result to running the entire render again :(

Thanks,

Jon