Rest in Peace instsvc.exe, you have served a good and hearty life. With the invent of 2008 x64 you are no longer required.
A built in tool ‘sc’ is now the command to use for all your services related configurations.
SRVANY.exe can still be used to run applications, simply specify:
sc create MRTG binPath= C:\Windows\System32\srvany.exe DisplayName= "MRTG"
Add the appropriate information into HKLM\SYSTEM\CCS\Services\MRTG\Parameters\ and your favourite multi-router traffic grapher will start with windows. =)