You could had just normally surf through the threads that others made for the Rapid Fire guide, Instead of making a new thread.. well, I've seen some user's XP 32bit works.
---------- Post added at 05:56 AM ---------- Previous post was at 05:48 AM ----------
Anyways, here's the guide.
*Works for Windows XP 32bit, tested & working.
1. Copy "BlackShot" folder from "C:\Program Files\Garena Plus\Apps"
2. Paste it on your Desktop.
3. Right after you're done, copy the current "BlackShot" folder on your desktop to make another copy of it, which is "BlackShot - Copy".
4. Now you've "BlackShot" & "BlackShot - Copy" folder on your Desktop.
5. Open @Dext+ 's Rapid Fire.rar & extract the "Edited" ones to "Desktop\BlackShot\Data\_SG\Script\weapon", replace everything.
6. Now, open your "BlackShot - Copy" folder, the NON-EDITED one. & start with the launcher.exe
Hope it works for you & enjoy.