Can you sync a jailbroken Iphone with a different computer?

Okay, So I have an Iphone 3gs with os 4 on it and the latest jailbreak. I recieved it from this website that totally forgot to wipe everything off, and it has a jailbreak which is fine, but I was wondering if I could sync it. There is nothing I'm worried about on there except for losing the jailbreak and the things I've put on thereCan you sync a jailbroken Iphone with a different computer?Many say you can, others say you cannot. Syncing it on a different computer shoudn't affect the phone as long as you are logged onto your iTunes account onto that computer. However if you have to restore the phone, then your jailbroken will most likely be erased. Charging the phone is a completely different story, I have a 3GS on iOS 4.1 and it is jailbroken. I connect my phone to my girlfriend's laptop and on her family's home computer all the time to charge it and nothing happens.Can you sync a jailbroken Iphone with a different computer?yes but do not update it