Firmware 4.3.5 -- baseband 4.10.01 -- carrier unlocked -- jailbreakable?!

[Flaime]

Hi there. Sorry to make a post about this but I've been trawling through the net and I cant find a solution!

So the details are:
Firmware: 4.3.5
Baseband: 4.10.01
Unlock status: done by my carrier (orange uk)

I was wondering which method of jailbreaking I should be using? Basically I really want to get a copy of Siri...

Any help would be great

Cheers

[Simon]

Update to 5.0.1 and use the latest redsnow to jailbreak untethered. Getting siri to work is a whole different ball game.