Simple Tagging Plugin

I am currently using the Simple Tagging Plugin in a somewhat interesting way.

I am tagging posts with the URL for the company in which the post refers – then using those tags to link that post back from a page about that company. I guess the best way is to see it in action: here.

If you look at the bottom you will see all the companies related to that company as well as all of the posts referring to that company.

Anyways – I am trying to setup a master list of companies (currently visible here) and I would like to make this a bit easier on myself. To do this, I just need a function that will list all of the posts in alphabetical order with a particular tag.

For example: listPostsWithTag(‘video’) would list all of the posts with a tag of ‘video’

I’ve looked over the Related Posts function but it’s a bit confusing for me at the moment – it looks like it’s a good starting point, but I only need the relation off of one tag I specify (not all the tags of the post).

Can anyone help me out with this one? Thanks!