License Apache and LGPL

[Angelo zerr]

Hello,
I created RTFTemplate project, RTF template engine (if you are interested,
see http://rtftemplate.sourceforge.net/index.html) and I use LGPL license.
But RTFTemplate use Jakarta Velocity library which is Apache license. Can I
use LGPL license? Must I change license LGPL to Apache license? Can I use
GPL license otherwise?
Thank's for your response.
Angelo