Hi there - I'm confused at how the various manufacturer Android interfaces work. For example, if I get the Samsung Captivate, am I stuck forever with the Samsung version of Android (can't remember what's it's called)? Can I download Sense to the Captivate? And what's the relationship of the manufacturer UIs to the other things I read about, i.e. Froyo, etc. I guess my basic question is: if I buy the Captivate, am I stuck with the Samsung version of Android, or can I download Sense to the device?