Help Which Folders are needed?

[Sabresfan2630]

Can someone expain to me which folders are needed on my SD Card and which folders I could get rid of?

List of Folders:

.android_secure
Android
data
DCIM
LOST.DIR
Media
Music
burstlyImageCache
burstlyVideoCache
com.espn.score_center
where
.avg
download
InkPad_Notepad
ooVooCache
openfeint
screenshots
.mmsyscache

 

[sounreal]

.android_secure--- if you see anything in here keep it i guess.
Android--- apps and games use the folder
data--- apps and games use the folder
DCIM--- camera pic
download--- anything you downloaded is here