Negative Tests - Checking for links which should NOT be present.

[Kartal]

I am total newbie and I am playing with QTP and I would like some help. I am running some tests on a website. The website has a logon with different classes of user. An "Admin" user has access to a host of links which enable the administration of the site, a "ReadOnly" user has a limited number of links available. Once logged in as a "ReadOnly" user how do I check that the links which are available to an "Admin" user are NOT available to a "ReadOnly" user ?

I have set up some standard checkpoints on the additional links when logged in as "Admin" but when I use these same checkpoint when logged in as "ReadOnly" it complains the object is not available.

What is the best way to test this scenario ?

Any help would be appreciated.