Beta 3 - UK Key Mapping (Hash and Alt Right Arrow)

Operating System: Mac OS X 10.5 (Leopard)
Processor: intel

Can anyone tell me how to get a Hash symbol with Beta 3 on a UK keyboard
(which would be alt+3 on the Mac side).

Also I use Visual Web Developer 2005, whilst using Beta 2 I could use
alt+Right Arrow for code completion, in Beta 3 this does not seem to work
and in fact after pressing this key combination strange things happen like
further keypresses are either ignored or open menu items.

Thanks