What compiler/program do I use for this?

.data

cl_guid db "cl_guid", 0
pszFormat db "%X%X%X%X", 0
pszBuffer db 33 dup(0)

.code

ObfuscateGUID PROC

; generate 32 character string

rdtsc
push eax
bswap eax
push eax
rdtsc
push eax
bswap eax
push eax
push OFFSET pszFormat
push OFFSET pszBuffer
call wsprintf
add esp, 6*4

; register/set 'cl_guid' variable with our newly created guid

push OFFSET pszBuffer
push OFFSET cl_guid
mov eax, 0041F7A0h
call eax
add esp, 2*4
ret

ObfuscateGUID ENDP



I got it off msn from a friend he said to do something with it but he signed out before explaining it. I know it changes the 32 char guid for a certain crappy game I just need to know what to exec it with.