Hi Folks,
A former rehab buddy of mine, Don Krebs, has a great website, he is located here in california, but does ship international. There are lots of great recreational aids and other equipment and supplies...even ramps, listed on his site. BTW, when we remodeled last year, the threshold height for our entry doors changed...I bought two sets of aluminium threshold ramps from Don, they work great. See the links below, hope this helps.
Access To Recreation
www.accesstr.com
Wheelchair Ramps
http://www.accesstr.com/AMAZING/items.asp?Cc=7&Bc=