PSE 7 Image size

I have recently bought PSE7 and liking it very much. I really like the ease with which I can work on RAW files and the image takes up most of the screen but when I open it into the editor, the image goes very small - approx 4" x 3".
Can anyone please tell me how to increase the image size in the editor.
Thanks a lot
Can anyone please tell me how to increase the image size in the editor.
Thanks a lot

This is bugging me so decided to go on my laptop and do a bit of research.
Firstly, I was wrong with my earlier image size in the editor screen, I have measured it and it`s 6 x 4 approx. One click on the magnifying tool makes it just over 7 x 5 so that`s a bit easier to work with.
The Image size box shows the document size of 14.293 inches wide and 9.493 inches in height with a resoltion of 300. All 3 boxes at the bottom of the box are ticked.
If you have a minute, could you please let me know what the Image Size box shows on your set up.
Thanks a lot -- Alan
Firstly, I was wrong with my earlier image size in the editor screen, I have measured it and it`s 6 x 4 approx. One click on the magnifying tool makes it just over 7 x 5 so that`s a bit easier to work with.
The Image size box shows the document size of 14.293 inches wide and 9.493 inches in height with a resoltion of 300. All 3 boxes at the bottom of the box are ticked.
If you have a minute, could you please let me know what the Image Size box shows on your set up.
Thanks a lot -- Alan