Here's how I did it!

First I used the DavinciTeam's flashing client.

Then I waited for the Sony Ericsson website to load for me so I could DL and install the correct MMS and WAP settings. Well, I waited ALL fearking weekend for the pages to not display "Oh no! 404 - Page not found". So I finally called SE's 800 number (it's actually an 866 number) and asked them to send me the settings.

After getting both my MMS and WAP settings I started up a2uploader. I shut off my W760a, removed the battery and reinserted it. I held down the 5 button and plugged the USB cable in. I then dragged and dropped the files to their appropriate folders. I used the two .xml files in this thread (link located at bottom of post for files/apps used) and ULed them to the phone.

I started with customize_upgrade.xml...

<?xml version="1.0" encoding="UTF-8"?>
<customization>
<streaming>
<firewall-traversal-interval>15000</firewall-traversal-interval>
</streaming>
</customization>

And placed it in directory: /tpa/preset/custom

Then I restarted the phone. CV was not working but YouTube definitely was.

Then I ULed default_upgrade.xml...

<?xml version="1.0" encoding="UTF-8"?>
<customization>
<info>
<phone-name>W760a</phone-name>
</info>
</customization>

And placed it in directory: /tpa/preset/default

I restarted the phone again and now both CV and YouTube videos work.

The two .xml files I used and the a2uploader can be found HERE.

---