You should be able to change that in your account settings. Click the My Profile/Account button at the top of the page or click the down arrow/gear icon below your name to the left of your post. You should be able to set your Display Name there.

Hi Gary

Just to add a little to Tiny's excellent answer...

I have no idea what the "Nickname" is for, or where it even shows up in posts.

But, in case you are interested, anything you enter in the "Signature" area of your profile will show up in small letters at the bottom of every post you make

To clarify further, there are two 'profiles':

1. One profile is for the VCCA website in general (called the Member Dashboard). Click on Member Dashboard  at top, right side of every page within the VCCA website to access the dashboard. See the RED circle in the first screen shot below.

2. The other profile is for just the forums. This is accessed by clicking on the My Profile button in the forum header. See the GREEN circle in the following screen capture.

The forum profile is where you set your Display Name and your Nickname.

The Display Name is the name you are known by in the forums. It's the name that appears under your avatar. For example, My Display Name is Rustoholic, with a capital R.

The Nickname is the URL address identifier. It is the character string that appears after the @ sign under your avatar. For example, my forum nickname identifier is rustoholic, with a lower case r. The Nickname is used when someone wants to give a shout out to you in their post. By including a @nickname in your post, the website will automagically send that person an email, which tells them that they've been mentioned in a post.

Here's a screen shot of the forum profile, with Display Name and Nickname circled in GREEN. You can edit the values for the Display Name and the Nickname.

Hope this helps. Dean

Thank you all for your help.  With your help I have successfully made my change as I needed.  Now, on with the show (newbie here)!