Hi Helen
Don't worry about time differences or currencies when using AS.
Set the snipe in the amount you want to bid. If the Auction is in pounds then AS will snipe in pounds, ditto in Yen, Euros or Dollars.
Again, time differences are ignored as AS snipes seconds from the end. It does the hard work for you.
And yes, steer clear of the Union Jack - AS appears to have a habit of releasing upgrades before they're tested/ready and I've been getting errors recently whilst they've been updating the site. Rest assured, the sniping bit works fine - it's just the displays that are going Pete Tong! (that's "wrong" for those that don't drink Tea or watch Coronation Street!)
R2
ps. when you register, you'll get three free goes so try it. You'll like it...