every time i give queen a weapon, it technically shows up, but when I order it to attack, it simply says that..."unable to attack target"

It can't.
I remember someone saying that the queen's attack was hardcoded in some way making it unable to use regular weapons.
Someone else should verify my post, though. I'm not really that sure.

http://www.staredit.net/topic/4230/

Have a look through existing topics and try out the search function in the future before posting. Thanks.