Sorry for the delay. I used to check these forums daily but lately I have forgot to. I was able to get my chumby working again and I can move it around and the power connector still works
So the first thing on my chumby one is to create the /psp/rfs1/userhook1. Type the following in the new file:
ln -s /mnt/storage/usb /mnt/usb
Then change the permissions of the script so it is executable by running
chmod +x /psp/rfs1/userhook1
So it should look like this:
chumby:/psp/rfs1# ls -la
drwxr-xr-x 2 root root 1024 May 6 21:47 .
drwxr-xr-x 11 root root 1024 May 10 20:26 ..
-rwxr-xr-x 1 root root 45 May 6 21:48 userhook1
So now when your chumby boots up it will run the mount command and mount the /mnt/storage/usb folder as /mnt/usb each time. If the usb dongle gets plugged in it will remove this symbolic link. I haven't tried it but I have heard it works. Then to get your usb link back just reboot the chumby without the usb dongle. Now all you need to do is place the alarmring.swf in the /mnt/storage/usb folder.
Let me know if you need more help. I will be visiting the forums daily hopefully.