So I found a VPN program, I think, made specifically for gaming. It's called 'softether' and it connects you to a Japanese server. I found it hard to find help online about how to use it or what it does. Still, I believe it's free and it will connect people to playonline.
I can't exactly tell you HOW to make it work, unless you know Japanese. The commands though are in English.
What I did, maybe by sure luck, was click on the 2nd icon (looks like a sugar cube, says VPN) then clicked on "CMD TOP CONNECT" then "CMD CONNECT." Windows will pop up... just keep clicking yes. When a window pops up that has a scroll bar and pictures, go all the way to the bottom and click the last button you see. The VPN will be connected (if you go back to CMD TOP CONNECT you'll see that you can disconnect) and when you click on playonline, you'll be able to login.
Sorry if the description doesn't help. Again, don't know Japanese. Still learning Korean.
Here is the link: http://www.megaupload.com/?d=HVSRUSPT
BTW, the download is in the top right hand corner, with letters you have to type in to start the download.