Run one program on 2 user accounts??

I am using windows 7 64bit.

User one is administrative account and user two is a standard user account.

I use Steam all the time and have it open in the background on user one. I want to know if I can have user two view and use the program as if it was on user ones account. Yes I can use "Run AS" but I have to close the steam on user one (It can not even be ruining in the background.). Then I can open with run as on user two.

I want to be logged into user two and view and interact with steam (which is open on user one. Can it be done??

Can I switch to a program that open on one user when logged in to another user?