Skinned Dock Application [Help]

So I have been trying to skin this application dock:
http://androidforums.com/htc-droid-eris/68853-application-dock-sense-i-found.html

I liked it except it was ugly with the page over buttons, and the wasted space on the top. So I edited the .png files for those to be empty/clear/whatever you want to call it. I remember where the buttons are, I can deal with it if it looks better.

Anyway, when I go to install, I still see the same icon and everything, but it is saying installation failed.

I know this is most likely because it needs to be re-signed...I have been reading for a while now how to do this and I can't figure it out. If someone could give me a hand that would be great! Or if someone could sign it for me that would be even better. Anyway help?

Here is the finished .apk with all the edited .png files:
MEGAUPLOAD - The leading online storage and file delivery service

 

I got it to install before when I just deleted the .png's, but the widget wouldn't open...This version just has them clear and named the same file name, so it should work, but I can't get it too. Anyone?