Here's the lazy way that I add HyperText Links to posts:
I'll end up by providing a link to the post that LisaTX had that gives instructions on how to cut and paste in Internet explorer:
First, go to the post that you want to provide a link to.
Click on the right side of the address bar just behind the last characters, so that the entire address is highlighted. You could also use your mouse and click once at the beginning and then click and hold across the address to 'select' it.
Right click on it, after it is highlighted, and select the 'Copy' command from the menu that is displayed.
Now go to your post that you want to provide a link in. Place the cursor after your current text by clicking once.
Now look above your reply in the 'VB Code' section and click on the button marked 'http://'. This will bring up a small dialog box that says 'Enter the text to be displayed for the link, optional)'. This is where I put a description of the link I'm providing, in this case, I'll put in 'Lisa's Cut and Paste Thread'. Then I click on Ok.
Now another dialog box pops up and it says 'Enter the full URL for the link' and it is NOT optional. The first few characters are already highlighted so whatever I put in will just overwrite what's there. Now I just do a right click and then select the 'Paste' command and it fills in all of the address characters that I previously copied into the box. Then click on Ok and you're all finished.
This method uses the buttons and what is called a script to place the address of the thread I want to refer to and also an optional title into the post for me.
Now, here's a link to the thread I mentioned earlier :
Lisa's Cut and Paste Thread
And that's another method of doing it.