Attitude Money Order +rep!!

Hello, I have just recently bought several seeds from the attitude. I am currently living in the united states of america. I chose the postal order option when checking out. the grand total was 42.67 gbp (like 70$). THey told me to make the order out to ATTITUDE INCORPORATED LTD., they gave me my order number and thats it. Now, here is where I am stumped. I have never used a postal order before and I neeeeed help sending this in. could somebody please tell me step by step what I need to do. On the attitude site it said to ship to
The Attitude
PO box 803
IPswich
IP3 8X2
United Kingdom
I have no idea what this means^^ how do i ship my order to them? How do I get a postal order? Will the postal office accept USD even though the site takes gbp? thank you. help would be greatly appreciated. + REP for any helpful answers!

go to the post office and get a postal money order. Ask for it to be in the currency requested and the post office eill convert it to U.S. dollars for you. it is like a cheque but the funds are guaranteed by the U.S.P.S you may have to fill out the name of the company just like you would a cheque or the post office may do it for you. They do that here in Canada. after you have filled out the money order you mail it to the address provided and make sure your mailing info is included also include the order number attitude gave you on the postal order

Sweet thanks. I went to my post office today and the lady said they did y have money orders to England or united kingdom. So wtf

What the hell is a Cheque JK