"I wonder if anyone here can help me? I'm trying to produce some wordlists that will help my wife and ... sueful too, but nouns and verbs will be enough to get on with. 100 would be a useful number too."
There can never be even good lists of commonly used words in English. Every individual has his/her own list of words they use commonly, but these vary wildly between people, and groups of people. Different genre of writing also use wildly different words.
The academics use the LOB Corpus
http://clwww.essex.ac.uk/w3c/corpus ling/content/corpora/list/private/LOB/lob.html But I would not recommend that you go down that route
Dave Fawthrop Google Groups is IME the *worst* method of accessing usenet. GG subscribers would be well advised get a newsreader, say Agent, and a newsserver, say news.individual.net. These will allow them: to see only *new* posts, a killfile, and other goodies.