1. download every driver or software needed to connect your phone via usb, or you can get it here http://gorumors.com/samsung-galaxy-s...-i9000/2754159i9000/2754159
2.download update for international i9000 with superuser 2.3.4
3.extract GalaxyS_I9000_One-Click_Root.zip . look for root.zip, delete file.
4.rename "update for international I9000 with superuser 2.3.4.zip" to root.zip
5.move it to the "GalaxyS_I9000_One-Click_Root" folder
6.run application, click unroot 2.1 your devise for those who already rooted their sgs (im not certain about double rooting) so play safe!!!
7.if you got a fresh device then you can go ahead click 2.1 root.
8.follow the onscreen instruction (takes about 30 seconds) i think
9.voila! you got a brand new superuser 2.3.4!!!
"for those who think that you are superior, and call the rookie a noob ,and not willing to share your knowledge. im sure that one day you gonna get your stuff bricked, or having a misserable death" be wise good deed will grant you friends and prosperous live!