On the video I showed you 2 ways, and 3 different configurations:
-From DarkyROM JVT: With and Without Lagfix activated
-From Stock JVQ with a custom kernel

I recommend going via stock JVQ + custom kernel – but if your lazy, then just flash it on top of another GB ROM – just remember to wipe etc.

Download MIUI Android I9000 1.10.21:
Click here

How to flash stock JVQ + a custom kernel can be found here

Enjoy!
–TotallydubbedHD