Licensing Question

[kistmaximum]

Hi all,

I am developing a Qt application that uses qwt and openstreetmap (qtmobility plugin (http://xf.iksaif.net/dev/qtm-geoservices-extras.html)).
Qt seems to be licensed under LGPL, qwt has its own license (http://qwt.sourceforge.net/qwtlicense.html), openstreetmap is licensed under Creative Commons Attribution-Share Alike 2.
Under which license can I release my application, what are the possibilities?
I really have no idea about this licensing stuff, so any help is appreciated.

Thanks!