It sounds like you installed OpenDingux, am I right? Same thing happened to me when I first tried OD, realized I didn't have a menu system or anything else, and just plunked Local Pack 0.35 on the SD card.
Local Pack 0.35 was made for legacy Dingux, so the file system's a little bit different. AFAIK, noone's made an OD local pack, so you're stuck finding OD-compiled games and apps (and maybe some legacy Dingux stuff that's still compatible with OD) individually and installing them one at a time.
Or you could install legacy Dingux on another SD card, put on local pack 0.35, and go nuts.
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