does your USB port work? try connecting to a different USB port before you scrap it. if it doesn't work, or you've already tried this, then i'd say either buy a new ActionReplay, or get an AceKard 2/2i. i've never tried the R4, but i love the AceKard (just got it a few weeks ago). there's a tool you can use to back up your game cart/save, so moving to it wouldn't be too hard (i've heard you can use the same tool on the R4). i'd almost say go with the R4, though, as i can't seem to get most of the AR codes to work with the AceKard (but hey, maybe it's just me, lol). it's whatever you decide! good luck! :D
yea i already tried that... all my usb ports work. and hmm...i didnt know there were different cards like the r4 lol i only knew about the r4 cuz i had to babysit my moms friends 6 years old daughter and she was like "i have 75 nintendo ds games!" i was like holy shiz you brought them all?!?!? and that was when i saw her r4 lol .....
and hmm...waddaya mean by latest drivers?? i have the nds link driver that pops up when you first connect the ards to the computer and i made sure it was in the correct place...but maybe thats my problem??