Usage: WinXP-PAE-Patch.exe [/M:4GB | /M:ALL]

/M:131072MB Limits RAM to a custom amount in MB (megabytes).
/M:128GB    Limits RAM to a custom amount in GB (gigabytes).
/M:ALL      Uses all available RAM.
/NB         Does not create backup copies of original files.
/NOBACKUP   Same as /NB