[TheMilkCarton]

Well, what I was trying to explain is that if you were to use a JavaScript alert in the Prefix Markup, it's going to be executing it for every prefix on the page. I don't think 20 popups will be very user friendly? I can't be certain this will happen as I don't know the ins and outs of the code, but I'd say it's more than likely.

Alternately, you could try:

<if condition="$show['member']">{1}<else /><a href="register.php$session[sessionurl_q]" rel="nofollow">$vbphrase[register]</a></if>

I'm honestly not sure if the link will parse correctly, so you could also just do this:

<if condition="$show['member']">{1}<else />Register to View</if>

EDIT: I think you're going to have to alter the plugins. Sorry. It didn't know what to do with the variables I used, so they'd need to be added into the plugin anyway.. OR whoever said conditionals would work in that markup box was wrong. Sorry.