Adding Time Code to MTS

Hello,

I recorded interviews using a Canon XA10. I couldn't find a way to add a time code while recording. Is there a way for me to do it now? The camera outputs to a series of MTS videos, each being around 2 gig. I have an older version of Premiere that can't open MTS files. I need them to remain HD, and have a time code. What's the easiest way to do that?

Thanks,
Mysticzine