Lost code

I upgraded to WP3 last night without a problem, after the upgrade I was informed there was a newer version of the theme I was using so I upgraded that. Unfortunately when I did this I lost a small bit of code that was entered in one of the wideget. Before I did the upgrade to WP3 I took a full backup but I can’t find where to look in the backup to recover the bit of code I want.

The code was entered into a widgets text box on the side bar, can anybody help me locate where I will find this code in my backup??