Install Debian http://www.debian.org/distrib/
By now all your hardware should be supported by the kernel so no problem.
If you decide to go with a different distro like Linux Mint, Ubuntu, OpenSUSE or fedora make sure you grab the version with the lightest graphical interface like Xfce or LXDE.
There are lots of windows manager and they are supper fast, lot faster than a full size desktop manager. But if you are new to Linux you will find them to be inconvenient due to some limitations because they are made to provide just the very basic tool on the graphical interface.
However once you master Linux you will be able to hack your own system to do everything you want from the command line and you might end up finding the graphical interface to get on the way.
If you are interested on the other distros I mentioned there here are the links
<---------Download the Xfce version
<----------Spin-off Ubuntu with Xfce graphical interface (Very GOOD)
<----------Download the DVD and select XFCE or LXDE GUI
<---- Again look for Xfce or LXDE
Good luck to you