Download ?Resource Hacker? from http://www.angusj.com/resourcehacker/. Wonderful little tool! I do not know if it works for Vista but I know it?s good for Win95 up to XP. This will let you amend the text legends for just about anything.
For example:
Make a backup copy of Explorer.exe from C:\Windows just in case! Start Resource Hacker and open C:\Windows\Explorer.Exe. Expand the String Table and then the 37 for standard XP and 38 for Classic (change both is easier). Highlight 1033 and then for the start button, modify element 538. Just double-click, change it (keep the quotes) and save the changes by clicking the previously greyed out [Compile Script] and then doing a Save As to, say, ExplorerX.exe in C:\Windows.
Edit the Registry and open the key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon. Change the Shell value to reflect the new ExplorerX.exe and reboot.
From here on, you're on your own...
:)