[@robin-w Moderator 12 years, 7 months ago]

Ok, I’ve worked out an easy(-ish) way to do this.

a) Install the plugin WP Modal Login.
Dashboard>plugins>add new>search “wp modal login” install and activate
b) Settings
Dashboard>settings>wp modal login
you can play with the settings, but primarily you need to select a theme (later on you can play with the css to get it looking nice!)
c) Then follow the post a couple up from the last in this link which has all the steps to add it to the menu
NOTES:
On step 4 – Whilst you can check all the options as he suggests, what you actually need to ensure are checked are “links” on the first line and Description under the “show advanced menu options”
On step 5 – what you are creating is a new link, sop click “links” on the left hand side, and a dropdown with the url and link text will appear. Populate these two as he suggests and then add to the menu. Then look at the bottom right, and you’ll see this added as a custom item. Open this, and you’ll see the Description box, which is where you drop the shortcode.

As I said, you can play with the css to get this looking how you want.

Give it a go ! (I’m about to!)