Congratulations! Just a heads up to anyone out there looking to move into a different company or getting out of school and just starting out:

If a company doesn't give you a FORMAL letter, nothing is certain. So you can tell them yes, but until they actually have that signed formal letter, you can do whatever you want and they can do whatever they want.

My brother and GF work in HR, and they've seen cases where people accepted offers, but then the day they were supposed to start working, they EMAIL not even freaking calling, EMAIL the company and say they were offered more money by their current company and will be declining working for them. Talk about BS! BUT, no law/rule against rescinding an agreed offer letter. They'll just keep records that you were an asshat and if you were ever to apply to that company again, it'll be on file.

Sick world, but you know what, sometimes you need to be aggressive, cuz you take care of yourself first, not the company and/or your co-workers, you first.

Andrew