Boardwalk III,
A UK citizen just posted this information on the Budget board concerning the 10-day World Hopper passes; I am going to order them this week.  PS Have you heard anything about how much it would be to ship the passes to the US?
The 
Disney store in the UK are now selling these tickets until the end of May and are valid for use for 20 days from the first day of use - I purchased mine on Firday and they are great - Plastic like a credit card with the 100 years of Disney logo, you also get a voucher for a Character breakfast included in with the ticket - the following is printed on the reverse of the ticket 
10 DAY WORLD TICKET SPECIAL OFFER GUEST 
your 10 day world ticket entitles you to 10 days of admission to the following parks with the freedom to visit multiple parks on the same day 
MAGIC KINGDOM park Disney MGM studios 
Epcot Disney ANIMAL KINGDOM theme park 
Disneys blizzard Beach water park Downtown Disney Pleasure island 
Disneys typhoon lagoon water park Disneyquest indoor interactive theme park 
Disneys wide world of sports complex 
VALID FOR ARRIVALS MAY 1 - OCTOBER 31, 2002 eXPIRES 20 DAYS AFTER FIRST USE 
Nontransferable must be used by the same person on any and all days - Disney is not resposible for misplaced, lost or stolen tickets - Parks or attractions may change operating hours, close temporarily due to refurbishment, capacity, inclement weather or special events and may oatherwise change or be discontinued without notice and without liability to the owners of the Walt Disney World resort. Ticket, ID and handstamp required for re-entry - not valid for special events requiring a seperate admission charge or for any park commencing operations after May 1 1998 - it is agreed between owners of the Walt Disney World resort and ticket users that all claims for injury or loss arising incidents to presence on owners proprty shall be litigated in Florida 
Admit one Void if altered 
Revocable Nonrefundable 
I hope that this information is useful