office 2010 setup question

I was eligible for a free upgrade to Office 2010 based on a "qualifying purchase" of Office 2007 (I'm using Home & Student). I went ahead and downloaded the new software. Initial installation went smoothly, but I chose Word to open first to try out the new programs. Unfortunately, I had not uninstalled Endnote3, and apparently the "cite as you write" add-in for that program causes Word 2010 to hang. I have since uninstalled Endnote3 and downloaded and installed Endnote4, and Word is now running fine.

The problem, however, is that after installing Office 2010, when you first open one of the programs, a pop-up window appears asking you to choose what appear to be settings for getting updates (and possibly letting Office report to Microsoft?). There are three choices (the first is "recommended" and the third has that Microsoft shield that's red with an "X" because they are discouraging you from choosing that). I tried to just go ahead and select the first option, but the program was stuck again and wouldn't move on. The button that you click to select the option wouldn't fill in. I was forced to force-quit Word again. After a couple more unsuccessful tries to get the program working, I did some research and figured out what the problem was (Endnote add-in, see above). However, that dialogue box has never reappeared.

Questions:
1) What was Office asking me to make a choice about?
2) Since it hasn't asked me again, is it likely that my choice actually "took," even though I never saw the box (circle) "checked"?
3) Is there a way to go back and a) see what that setting is, and b) change it if needed?

Thanks.