Here's an easy one! Picking an avatar will give the forum (and you!) a bit of personality. It can be you, your bike, your calico cat - whatever.
But there are some rules: it's got to be 90 x 90 pixels in dimensions, and no larger than 29.3 KB. If you already have an avatar you use on other sites, or know how to crop and resize a pic, skip down to "Uploading your Pic". Otherwise:
Getting a Pic
Find a picture you like, and save it to your computer:
Then go to http://www.shrinkpictures.com/ and click "Create Avatar"
Follow the instructions and put "90" as the size. It will give you some options for cropping:
Choose the one you like and click "Download".
Time to upload it.
Uploading your Pic
From the home page of the forum, click "User Control Panel"
Then the "Profile" tab:
Then "Edit Avatar":
Click "Browse" and go locate that image you made.
And you're all set!
If you're having any troubles, let me know!