direct link htaccess rewritemodule

[ch33p0x]

hi, don't know if this is the right place to post this.. i'll try anyway:p
well..
i've created a page. and it's a signup page, that me (the administrator) have to activate every user to sign in.
and im wondering, is it possible to fix a htaccess file or something to NOT ALLOW direct link from my page? there are 3 ways to give out a direct link. and i want it to block that. when they try to go to an direct link. they will be redirected to the login page. i've tried alot of htaccess configs. but NO luck. some htaccess files are blocking everything, and me (the admin.) so it aint browseable for those who really are logged in. does anyone have an answer or can help me with this htaccess file?
i've also tried the beta plguin that was doing this.. but that didn't work either:/