As Locke said, the most basic rights are those of "life, liberty, and property", and these are unalienable, and enshrined as such in the US Constitution. To quote from a site Lemur linked to on another thread, "A property right is the exclusive authority to determine how a resource is used, whether that resource is owned by government or by individuals."
"nor be deprived of life, liberty, or property, without due process of law; nor shall private property be taken for public use, without just compensation."

Doesn't sound inalienable to me...

"For wherever any Invasion is made upon unalienable Rights, there must arise either a perfect, or external Right to Resistance"
This always confused me. When we put people in jail, are we violating their inalienable right to liberty? That's what inalienable sounds like it means to me.