As of 4/24/08 they support:

• Canadian Dollars
• Euros
• Pounds Sterling
• U.S. Dollars
• Yen
• Australian Dollars
• New Zealand Dollars
• Swiss Francs
• Hong Kong Dollars
• Singapore Dollars
• Swedish Kronor
• Danish Kroner
• Polish Zloty
• Norwegian Kroner
• Hungarian Forint
• Czech Koruna

More details located on this PayPal support page.