No, it really is that easy!
I wrote this this morning but didn't press "send", so dhn has answered already, but I might as well post it!
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In the 'named' map folder ("North America", "Western Europe" or whatever yours is called, you'll find a file called "Clubs.ov2" (or "clubs.ov2") - that's all your data. Just copy that to the same map folder on the other unit.
there will also be a file called "Clubs.bmp" - that's the little icon/picture you chose, so you should copy that over too.
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Also, in case you didn't know and were using one of the standard icons, if you want you can make your own as well.
If you can find the club logo or other suitable picture that can be reduced down to 22x22 pixels in size, save it (in bitmap picture format) as "Clubs.bmp"
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(By the way, as this is a specific question rather then a general "hello" I'll move it to the "ONE/START/EASE/XL/XXL" section).