Hi, rob_Allen - welcome to HubPages! Apparently, some non-US applicants have to be online for six months before they can be approved. Usually that would be in China or India, I think. Otherwise, you'll need to have some hubs written and have a few links, perhaps, to demonstrate you've got an actual site running.
It takes around four days, barring any immediate factors, to get reviewed and approved. If you don't have content, they may let you know sooner. If you aren't approved right away, don't worry about it - just concentrate on writing great hubs, and apply later.
Best of luck to you!