how to change premission of SDCARD to Readwrite in Android 2.2 FileExplorer

I am trying to push a videofile onto SDCard . But when I opened SDCARD in FIleExplorer the permission of SDCard is not showing readwrite. How to change SDCard permission to readwrite so that I 开发者_开发技巧can push my file into SDCard.

Thanks in Advance.

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I got Solution to this problem:

Step1: E:\android-sdk_r06-windows\android-sdk-windows\tools>android create avd -n google_emu -t 8
Created AVD 'my_avd' based on Google APIs (Google Inc.), with the following hardware config: hw.lcd.density=160

Step2: E:\android-sdk_r06-windows\android-sdk-windows\tools>mksdcard -l e 512M mysdcard .img

Step3: E:\android-sdk_r06-windows\android-sdk-windows\tools>emulator -avd google_emu -sdcard mysdcard.img

After this go to DDms/fileExplorer. In that select "sdcard" and top right press Right Arrow Icon to install the corresponding file into SDCard ,which opens up a dialogue box from which we select our file and push it to SDCard. Now Run your Android project , it will work fine.