screen unlock

No. My security screen shows change unlock password, visible passwords, use secure credentials, install from sd card, set password, and clear storage.
The use secure credentials and clear storage are dark gray and don't let me open them.

I don't have the option to change unlock pattern or require pattern. Change unlock password only lets me change password.

LOL
No need to kill yourself.  We'll get it figured out.
If you are now on Official 2.1:
Make sure you are going to Menu > Settings > Security;
"Require Pattern" means you have to trace the pattern you set with the circles.
"Use Visible Pattern" means that if you have a lock pattern set, it will highlight in green when tracing it.

You should probably have success if you un-check "Require Pattern".  This completely eliminates the requirement to trace a pattern in the circles to open the phone.
You will only need to swipe down, or tap 'Menu" to open the phone.

I hope this helps.

I really like the lock pattern, so I don't pocket dial people, or open random apps, because my Eris is tossing around in my pocket.  The lock pattern completely removes this occurrence.