Hid the admin account - Cannot add Under Remote Management

I created an admin account ( short name 'admin ') , gave it User ID 499 under Advanced Options.

Then I hid its home directory

sudo mv /Users/admin /var/.admin

sudo chown -R admin /var/.admin

Doing this with the goal of simply hiding the admin account from other local users on the machine

When I got into Sys Settings -> Sharing -> Remote Management -> to allow the admin account to control/observe via ARD admin I cannot add the admin account? Any other non-hidden account will appear in the list of choices. Is there a way to enable the hidden account to control the machine via ARD?

OS: 10.6.7

ARD admin : 3.4

Maybe there is a a UNIX command to turn this on ?

Thanks