OK, I've almost got it. There is only one part I do not understand, and that is how to find the beginning of the value for the .tga. Here is a screenshot (I am using the Tugboat).
Would I start counting 12 bytes after the highlighted 61?
EDIT:
Is this the section I would copy into a new file and then delete? I need a little more help before I finish this. I hope to get this done soon, as I have to study for an exam tonight. If anyone can help a little more, please do so soon.