Gonna sound strange but does anyone own Roborovskii hamsters?

I got 2 on saturday they are about 8 weeks old but i think i might have one male and one female but they are not tame enough to have a look at (i am working on it) i was just woundering if anyone that has had them or has got some know of a nother way to sex them maybe from the shape of there bodies or someing i have looked on the internet and came up with nothing.
the main problem is they are related as far as i know so it wouldnt be the best thing..
can anybody help or know someone that can please pm me or reply to this thank you

yeah I know lots about thes hamsters.
Have they been fighting?
Did they come together?
What sex did they tell you they were?
Do they look the same?
What do their behinds look like?

OH- I'm just going to PM you

http://www.hamsterhideout.com/sexing.html

I also suggest the ask an expert section on practical-pet-care.com
I use it all the time for my guinea pigs.
I've had so many small animals... Rabbits hamsters (dwarf and syrian), guinea pigs, degus, I probably should be an expert myself.

thank you i willl have a look at the web pages

they look the same they have fourght once they did come together they just look the same