Apple mini displayport to vga cable. ...doesn't work. help.

Tried hooking up my mac mini using the apple mini displayport to vga cable to my 22" acer monitor but im getting nothing. At the same time I hooked my tv to the hdmi connection and could see in the display settings on the mini that a dialogue box for the settings for the acer had appeared but no signal on the monitor itself.....any ideas?

Try resetting the PRAM.
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.
(from http://support.apple.com/kb/ht1379)

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