It might add the pulldown (it'll have to to get to the necessary 60i), but it might not include the pulldown INFO in the stream -- meaning, you won't be able to remove it automatically later.

Any VHS movie you have has 2:3 pulldown in it, but if you were to capture it over an A/DV box, Vegas wouldn't recognize it as 24p, because there's no pulldown info.

Even if the pulldown stream info isn't there, the 3:2 pulldown can be removed with HDLink (just a check box), which would treat it the same as CineFrame24. I don't know how you would remove this using Vegas, however.

You could potentially right-click on the clip in the Media Pool, choose "file format properties," and then "manually remove pulldown." You'd probably have to tinker with it some to get it right, if you can do it.

The "file format properties" item isn't always available, though.

I was able to export a CFHD 24P file as a 24P/3:2 60i m2t from Premiere Pro using CineForm M2T export. Unfortunately, this is only available in Aspect HD (and Prospect HD), thus the reason I used Premiere Pro. Connect HD / Vegas do not offer the option (...yet? *fingers crossed*).