RAM for Mac Pro- where to put on riser cards

[rallycars]

My uncle got the newest pimped out 3.2 GHz mac pro. It came with 2 GB of RAM, 2x1gb i believe. He just got some more RAM in, 4x2GB. It seems that the sticks should be matched to the same slot on each board. So should I keep the original 1 GB sticks in slots 1 on each board, or should I bump them to the third slot in each board when I install this RAM for him? Thanks for your help, the guide wasn't this specific.

 

[Catch Them]

Search the forums, as its a very common concern and alot of information about it.

Here is a clear cut guide:
http://manuals.info.apple.com/en_US/MacPro_Early2008_MemoryDIMM_DIY.pdf

 

[GoCubsGo]

Did your uncle get a manual with it too? This is something that I found useful as well.

 

[rallycars]

Thanks guys that helped alot. I understand that searching always helps, but Mac pro RAM installation yielded too many results to be useful. Maybe I can talk him into installing it himself with those instructions. But something tells me he with balk at such tech speak. Have a great Thanksgiving all!