Meh... not that geeky... just a bit of relatively simple customisation using premade tools, had you rewritten bits of XP to produce such an effect and changed the entire GUI, that would be geeky.
I assume I'm a geek, I used to play various Warhammer games, I play copius amounts of computer games, I construct my own computers, am doing an IT degree, watch anime and manga and am currently in the process of watching al of Babylon 5. I'm also a member of Reading University's "Sci-Fi and Horror" and Anime societies. Does that cover geekdom?