1) this is incredibly old, from last summer, when there was no single health bill on the table yet
2) don't believe every chain email you get
3) under the current version of the bill, most people will keep their current health insurance. There isn't even a public option in the current bill, so how could they change to it?
4) this has been thoroughly debunked on snopes
http://www.snopes.com/politics/medical/network.asp