I would second getting the 03 skin for 07 and if it works for 10...
I am stuck in my ways, and using office since, well around 2006, i have got used to the ways it works and has evolved. 07 comes along and it seems i have missed a few releases as its just changed way too much for me. I went back to 03 (waste of money on 07) and when i found that 03 skin, i installed 07 again and slowly i am getting used to 07 when its for non-critical work, and using the skin when i need to work efficient.
Just downloading 10 now, see how different it is to 07, my guess is not very...
I like that there is no "Groove" never used it, never really understood the advantages of using it either...