My friend said his phone was broken, that he'd had to pick up a new one. "Broken? Broken how?" I asked him. He said he'd butchered the dock connector with an off brand charging cable. "You want it? It's f#@&ed!" "You're not going to be mad if I get it working are you?" "Ha! No, but good luck!"
The part arrived really quickly. I love just looking closely at the new part - even the seemingly simple bits are such wonders of miniaturization
Go slow, have a good system in place for keeping your screws organized, and try not to curse Steve Jobs too harshly for all the glue on the battery - I'm sure it wasn't his decision!
Other advice: it took me a few tries to get the new dock connector piece to seat properly in the phone - not a bad idea to practice getting this in place before you remove the glue backing.