How to disable the choice of an operating system when booting

Hi, I had the very problem discussed here (http://forums.majorgeeks.com/showthread.php?t=142511), and I did what they suggested there, only that I ended up with another problem. When booting, it asks me now to choose between Windows (default) and Windows (default).
I must mention that I played around with StyleXP 3.something and, silly me, I tried to change the boot screen. And eversince my computer made me choose between "Windows XP Professional (bootscreen)" and "Windows XP Professional". I deleted that windows xp professional (bootscreen) line from my boot.ini file and now I have something like this:

I thought it'll solve the problem, but as I said, now I have to choose between "Windows (default)" and "Windows (default)". I know that I could set the timeout to 0, but I wondered if I could get rid of this problem and if it's a serious one. Thanks!