I'm sorry, but I will not believe anyone is conservative until they have as a minimum a "rape/incest/life of mother" pro-life position.
A conservative believes in life, liberty, pursuit of happiness. We can't be robbing people of LIFE and calling ourselves conservative. LIFE is the ultimate value.
I think you can become a conservative when you work towards smaller government...unlike Bush last night who wants government health centers everywhere.
That's absurd. I don't begrudge you're belief, or the importance you place on the pro-life plank. However, you're not doing anyone a favor when you reinvent the language to suit your own needs.
We have a perfectly useful term to describe the pro-life position. We call it pro-life. Conservatism does not mean pro-life, but a whole host of issues, and I think most would agree that conservatism does embrace the pro-life plank. No arguement there.
However, when your definition hinges on the plank you wind up making a fool out of yourself by calling the guy who's anti-tax, pro-gun, pro-freedom, pro-military, ant-socialist, a liberal. Obviously, the liberals would drive this guy out of the liberal camp with torches and pitch forks.
Like it or not, conservatism is the sum of a lot of issues. When you find someone that embraces most (not all) of those issues, you've found someone who's more conservative than not. Period.