in my opinion to change the size of taskbar you need to change the some text inside msstyle. Beside there are softwares available to make editing easy (vista/7) , like Ave's Vista builder http://vistastylebuilder.com/ , there is also one for XP , it's name is TGT soft style builder i think,
best of luck dude, wtf 300,000,000,000,000 = 1$ U.S. !!! i should go there and buy properties , car etc... i think people there carry money in suitcase or truck..