You will need to get a DSi compatible flash card like the DSTTi, R4i or Acekard 2i:
R4i: http://www.ishopvideogame.com/r4i-2gb-kingston-memory-card-p-1629.html?r...
DSTTi: http://www.ishopvideogame.com/dstti-for-dsi-ds-support-sdhc-p-1646.html?...
Acekard 2i: http://www.ishopvideogame.com/acekard-2i-p-1509.html?ref=58
Most people prefer the R4i.. and that's the one I used for my niece's DSi and it worked fine. Nice Christmas gifts, btw. :)
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DSi is not compatible with DSTT for DS Lite
You will need to get a DSi compatible flash card like the DSTTi, R4i or Acekard 2i:
R4i:
http://www.ishopvideogame.com/r4i-2gb-kingston-memory-card-p-1629.html?r...
DSTTi:
http://www.ishopvideogame.com/dstti-for-dsi-ds-support-sdhc-p-1646.html?...
Acekard 2i:
http://www.ishopvideogame.com/acekard-2i-p-1509.html?ref=58
Most people prefer the R4i.. and that's the one I used for my niece's DSi and it worked fine. Nice Christmas gifts, btw. :)