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No.
Notification bars are part of the framework-res.apk, which is in /system. /system is protected and requires root to edit, and therefor no modifications can be done to it without root.
The best you can do is to find a home replacement app like Home++ and just hide it all together.

OK, but what if you are rooted? I "made the leap" to root two days ago, don't really want to install alternate ROMs, but I want a black notification bar... any way?
TIA
OK, but what if you are rooted? I "made the leap" to root two days ago, don't really want to install alternate ROMs, but I want a black notification bar... any way?
Edit: Never mind... a little searching goes a long way, eh?
I found this thread, downloading Metamorph now.
Edit2: oops, Titanium Backup said yesterday it had installed busybox, but Metamorph said not installed.... now I gotta go find that too, not on Market.

