I have plenty of room on my screen for it to show the entire thing but it won't let me drag it open.
Does not appear to be designed to be resized by draging. Apparently the app is having some compatibiliity issues with your graphics card/driver.
Compare your screen capture with howie1 's. Noticed that the % CPU and Mhz analog gauges in your screen shot have like a second graphic with a large gray bar at bottom -- which is probably causing the items below not showing.
If you have not already tried viewing with your display setting at 96 DPI, should try just to see if it still happens. If it works OK at 96 DPI, then try it at 120 DPI. So far all the Windows systems I've seen the two default DPI settings are 96 and 120.
If using a LCD display, is the 1024x768 the "native" resolution setting? (FYI: screen capture by FastStone Capture)