hi there,
i'm not sure if it was already mentioned: zoega's dictionary is online here:
http://norse.net.ru/ondict/zoega/index.html
at my university for saga translation we use mostly baetke's dictionary, it
is old norse to german. that's a really great and useful book, contains long
entries on many words including examples of use in the sagas, many phrases
like verbs with different prepositions, etc.
mona