Yes, it will run, but there may be an audio issue.
Why not just download the latest Quicktime? It's always a good idea to have the latest version of these standard utilities.
Thanks for the quick feedback and I would have no issue with latest v7.2 other than as I remarked it is only for XP or Vista not Win2K.
Looks like I am going to be left behind until I upgrade my OS.
However, I did download the LR 1.1 free tutorial and see that also is in H264 format and this seems to play OK. Is that of the same "standard" as the Cam2Print files?