Setting up workspace problem...

Below is a screen shot of CS4. I know this is a dumb question, but I'm so tired with fumbling around with this. I'd only like about an inch across (not 3 inches) over on the left. See how my document goes under my layers? Drives me crazy. I put the ruler up so you can see the extra inches over on the right that I do not want. Can someone tell me how to fix this. I'd like maybe an inch or so, but would like to be able to change it as I need it and obviously I'm not smart enough to figure it out. Grrrrr....
P.S. I do not want to make the doc smaller or change the size of my layers menu. I know how to do that. I just want to get rid of the free space over on the left.

In CS5, you can 'Float the Window' that the image is in and then size the window and put it where you want it. - Terry

Thank you so much!!!!

Does anyone know how to change the margin on the left without floating the windows? In my 64 bit version of ps the margin on the left is only 1 inch and that's how I'd like my 32 bit version set up. Now the 32 bit version has a three inch margin on the left which shoves everything over to the right under my layers & action windows. I've tried to change everything possible and still cannot figure it out.