Someone way better than me will get into the vaccination debate.
My personal opinion is that they only need them every 3 years after the
initial set.
However, if you ever need them boarded they'll need them, at least
around here. Check your facility if necessary.

Flea and tick treatment is necessary if YOU go anywhere there could be
fleas. Fleas and ticks eat humans, too. You can bring them in with you
on your clothes.
I myself have never needed to have flea and tick treatment for my indoor
cats, but my dog gets treated and she gets a complete physical check-
over by me before coming in the house if she goes anywhere but my urban
neighborhood.
A lot of it depends on where you live. We're too cold and urban here to
have a real flea and tick problem outside unless you go into the woods.
I don't like to put chemicals on or in them if they don't need them.
YMMV.

Every 6 months?? That seems way to frequent, IMO. Of course every person has to
decide which vaccines to get for their cat, in consultation with their vet, but
here's some links about vaccines you might find interesting:

http://members.aol.com/smplyschnz/health/vaxarticle.html

http://wholisticanimal.com/petvaccinations.html

Lauren

________
See my cats:  http://community.webshots.com/album/56955940rWhxAe
Raw Diet Info: http://www.holisticat.com/drjletter.html
http://www.geocities.com/rawfeeders/ForCatsOnly.html
Declawing Info: http://www.wholecat.com/articles/claws.htm