Going all voip at home

Rich is looking at solutions to go all voip at home.

Rich some things to look at:

* Mega list of sip products up at pulver.com
* Another at Sipcenter
* open source pbx — asterisk

The problem I struggle with is this — I have a lot of cheap handsets around the house connected by cat5 back to my wiring closet to my existing pbx. If i replace this pbx — what hardware bridges out to all these analog handsets? Or do I replace them (at great cost) with sip handsets — are there any really cheap sip handsets?