What do I do when My original Apple ID was with an IPod & windows pc setting & Now I have a Real Apple Macbook that I just want to work with My Mac, Should I change my Apple ID so the setting are all correct?

I am new to the Macbook Pro OS x 10.7.3 Lion and am having some issues with cross browser becuase I believe I used a windows Vista & XP pc with my Apple ID before I got my new Mac( I just LOVE IT!) It is already too late but should I create a new apple ID and go from there to fix some little problems I am having?

I want to have the apple ID that works just with my macbook so I do not get confused. Any help on this matter would be helpful.

Sharon THobois, And THank you in advanced.

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