I also created a US account. Thinking it was hassle i was mistaken.
First off you need a .com email addy, luckily my work email is a .com.
Second think was the fact i thought u needed a credit card for the US, i just chose to not 'add funds' and therefor didnt need to set one up.
Last, i just google an arizona hotel and used there address.
Got a good que of downloads, first one was poor thou, NBA 08 runs really slow on my PS3??
think its a Japan account tonight.
ps, i though that having multiple account on one PS3 meant that downloading on that account only meant you could see the downloads for that account, but it shares them so no swapping about unless it to gain access to the other PSN. Sorted!