Backing up saved files

I was wondering if there was somebody personally available to guide me through the process of putting a saved file from a retail cart onto my R4i via AIM or MSN or even Ventrilo.

http://forum.romulation.net/index.php?topic=37662.0All I have to say is READ CAREFULLY and read the whole thing before you even bother clicking links.
I say this because if you press B instead of A or A instead of B, you'll ultimately overwrite your save...

Thanks buddy.
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Okay I have no idea what I'm doing. I'm lost half way in this.
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That is for putting sav. files onto retail carts. Not what I asked for.