Is there any difference between the R4ultra and the R4SDHC? And DSI compatability?

Hi all.

Basically about a month or so ago i bought an R4sdhc card and i've been pretty happy with it, no complaints really.

Now i didnt buy it off the internet, simply a friend of mine who got a few from wherever gave me one and if i liked it i could throw him a few quid.


So my question is, on the box it says R4SDHC.com; this website:
http://www.r4sdhc.com/index-en.htm

But i first came across this website when i first got it:
http://r4ultra.com/index.htm

I assumed that it was the same thing just each with different stickers on the front.

Until the second site started saying how it is compatible with the DSI and all that. Normally i wouldnt care as i would see this as just being gimmicky but then seen that the first one (the site printed on the box) doesnt have any mention whatsoever.

The missus went out last week and put a deposit down to trade in the Ds lite for the DSI and alarm bells just started ringing tonight after she asked me what would happen with it.

If anyone could give any advice it would be greately appreciated.
Thanks very much guys.

CBG