How do I install my 90' GMC 1500 passengerside window myself, I ca

[gmjunky83]

Thanks for looking everybody, I really need the help! SO here its goes:

 

Recently, my passenger side window shattered for no reason when I shut it! So, off to the salvage yard I went, and bought a replacement window. Upon taking off the inner door panel, and removing the old broken glass, I cant get the new glass onto the track! Ive tried everything I know, and the furthest I get, is maybe getting one wheel onto the rail of the window, when there is two!Please help! I cant afford to have someone do this for me. Thanks!