British Pounds into Spanish money didn't work for me either, but I think Google forgot that most European countries got the Euro. The search only work for countries outside the Euro-countries, like this one:
5 british pounds in danish crowns
Because both Denmark and UK are non-Euro-countries. Check out the Danish Google-guide calculator page at the Copenhagen Central Library:
http://bibliotek.kk.dk/soeg_bestil_forny/googleguide/tilb/regn

Spanish money don't show up because there is no Spanish currency, only Euro...

It doesn't recognise LVL, therefore it is shit.

In fact it doesn't recognize quite a lot of currencies.
Why couldn't they clone the list of currencies from the Yahoo Currency Convertor? :/