Own distro, own name?

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http://askubuntu.com – So, well... There are lotsa tools to modify the system of Linux distro. I would like to start own OS. But I s**k at such programming. Lets say if I take Linux Fedora... I would use this tools and install important packages. Could I call this a new distro, like "Linux XYZ"? I've seen that about Linux Backtrack, which is just remade Ubuntu. May I also remake ready Linux distro to my own? Shortly, may I modify Linux distro and give it my own name? (HowTos)