How to transfer downloaded apps from the internal phone storage to the SD card ?
Download Apps2SD from Market, open it and click the apps you want to move to SD.
Here is a link: https://market.android.com/details?id=com.a0soft.gphone.app2sd&feature=search_result
Unless you are still on 2.1, then you can't do it.
Or if you have Froyo, just go to menu-settings-applications-manage, then click on each app you want to move, and hit SD Card.
And FYI, moving apps to the sd card is not the same as backing them up. All this does is move the data to a secure location on the card. A lot of people think moving the apps to the sd card will back them up, so they can reset their device and the apps will all be there. THey wont.
Separate names with a comma.