if u want to rename ur start button..
then do this now-
At first download resource hacker.
then open it.
click on file and open explorer.exe from C drive , windows.
click on string table..
open no. 37
on the right panel erase the word "start" and write u want to display instead of "start".
then click on compile script.
click on "save as" and save it with another name like-"nis.exe"
Then goto start>>run>>type Regedit>>HKEY_LOCAL_MACHINE>>SOFTWARE>>MICROSOFT>>
WINDOWS NT>>CURRENT VERSION>>WINLOGON.
Then on the right panel double click on shell and replace explorer.exe with ur new name u have saved already. for example"nis.exe"
now restart ur computer and enjoy with ur name inplace of start button....
same procedure u have to do with no. 38 if it doesn't work.