skype run other user on my FreeBSD system

[burkoff]

Hello, I have two computer users

work and testuser .Had so after you run

su - testuser

I run skype as:

testuser@host skype &

and work?

I know he needs "X" server. Would you help to run it the way I want coyotes.
My video card is going and I can not give you switch user and change user, "X" crashed