BatmanForever wrote:
So I need to stick US stamps on the SAE? and will that then go International????
Yes, you will need to use US stamps (or IRC). Anything sent FROM the US (either out of the country, or to another address inside the US), needs US stamps. Or, IRC. These are exchanged by the recpient at their post office for US stamps.
BatmanForever wrote:
Can I get US stamps from a UK post office?
No, or I would have told you that you could

Like I said, you need to get them from either a member here, or eBay. Or another source (I get mine from a friend in the states).
BatmanForever wrote:Could I just change some English Money to US Dollars and put it in the envelope??? How much should I put in $5?????
Technically, yes you could, but it's not recommended due to the amount you'd need to change (you can't for instance change £4.50 into American dollars, it has to be a paper note). I would include $3.