For all those don't have sd card
if you don't have a sd card and you want to get benefit from your internal storage in froyo b2, you can make the system to deal with internal storage as an external sd card, and you can use gallery,music and camera with your internal storage and enhance your experience>>
yo have to edit the following file
"/system/etc/vold.fstab" with any editor like ASTRO or ES explorer
you have to change the following:
dev_mount sdcard /mnt/sdcard auto /devices/platform/s3c-sdhci.0/mmc_host/mmc0
dev_mount sdcard /mnt/sdcard auto /devices/platform/s3c-sdhci.1/mmc_host/mmc1
and its better to remove mount command of internal storage in "/init.rc"
by comment the following "just put a(sharp #) before it"
#mount vfat /dev/block/mmcblk0p1 /storage
then reboot your android and enjoy !
please be aware that this fix work in case YOU DON'T HAVE AN EXT. SD CARD
in case you have one maybe the changes may not be as above
thank you all.