Try downloading the full zip file from here. Then manually copy it's contents to C:Documents and Settings(Your name).gradlewrapperdistsgradle-1.6-bin72srdo3a5eb3bic159kar72vok
If this does work, try to re-install Android Studio and follow these steps again.
If your running Windows 7 64-bit, try to edit android-studioinstudio.bat
SET VM_OPTIONS_FILE=%IDE_BIN_DIR%studio%BITS%.exe.vmoptions
to
**SET VM_OPTIONS_FILE=%IDE_BIN_DIR%studio%BITS%.exe**
SET JRE=%JDK%
IF EXIST "%JRE%jre" SET JRE=%JDK%jre
SET BITS=
**IF EXIST "%JRE%libamd64" SET BITS=64**
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