How can I make Seamonkey the default Web and E-Mail client in Precise?

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http://askubuntu.com – I've installed Seamonkey 2.14.1 via Ubuntuzilla, but I can't seem to figure out how to make it the default Mail and Web clients. If I click on a web link in the Seamonkey News or Mail reader it launches the link in Seamonkey as I'd expect. However, if I click on a link outside of Seamonkey, it'll launch Google Chrome (which somehow made itself my default browser). Can anyone help? I don't like Firefox/Thunderbird... I uninstalled both immediately after installing Ubuntu. Thanks in advance. (HowTos)