1. Extract MSI from rktools.exe
rktools.exe /T:<full path> /C
Example: rktools.exe /T:c:\temp\reskit /C
2. Execute the MSI with native command line options...type msiexec /? at a command prompt
Example: msiexec /I c:\temp\reskit\rktools.msi /QB
Notes....
1. You can control the installation directory by setting the RKTOOLS property.
Example: To install to c:\program files\reskit
msiexec /I rktools.msi /QB RKTOOLS="%ProgramFiles%\reskit"
2. At the time of this posting Microsoft doesn't officially support the Windows 2003 Resource Kit Tools on 64-bit platforms. Various people have reported success in running them on the X64 platform because of WOW.