I used part of the method from the solutions above; however, they did not work completely. On the latest version of Andy, this worked for me:
On Andy (Root Shell) [To get, right click the HandyAndy icon and select Term Shell]
Inside the shell, run these commands:
mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /system
cd /system/bin
cat sh > su && chmod 4775 su
Then, install SuperSU and install SU binary. This will replace the SU binary we just created. (Optional) Remove SuperSU and install Superuser by CWM. Install the su binary again. Now, root works!