Back onto the Aqaba/Nuweiba crossing - I made the crossing a week ago and currently only the slow ferry is taking cars.
The slow ferry runs at midnight but is usually waaaay late, and gets into Nuweiba about 7.30. You can buy your ticket inside the port and there is a duty free there so you can spend the last of your Jordanian.
It costs US$10 for a cabin, and take a sheet or something with you as our room was filthy - sheets and pillows were well manky.
When you get on the ferry you need to get an immigration card, fill it in and take it to the immigration desk - you will be guided when you get on the ferry. If you don't have a visa for Egypt, they will take your passport and you pick it up from the same guy in the immigrations office at the port in Nuweiba. Getting a visa at Nuweiba was a 2 minute job so no worries.
When you get to Nuweiba, follow the cars to the arrivals bit and look for a port policeman (white uniform) - the guy we used was very quick and efficient and we were done in 2 hours, will take a bit longer if other overlanders are there as well though.
I did try to make a note of the forms/offices/stamps/checks/payments you need to go through on arrival, but there were so many I quickly lost track!
The port policman was excellent though and if you do exactly as they say when they say it you should get through with no probs.
Charges very roughly as of last week were as follows (in Egyptian pounds)
pay man to take chassis rubbing - £10
Visa - can't remember - maybe a couple of hundred
Insurance 1 month £325
Main entry fee £350
Something for the traffic police - maybe the licence - £25
something for another bloke in a little office - £25
Photocopying fees - about £35
I think the port policeman would have appreciated a little backsheesh and was worth it but I didn't have my wits about me after a sleepless night in a stinky cabin and he got nowt.
Hope that helps : )