Just wanted to share what i've read in canon's article about CF cards. Hope it helps you to prevent frying your CF. Here it is:
CF Card Formatting Error Notice
When a CF card with capacity greater than 32MB is formatted in Windows XP, by default, it will choose to format that card with a higher capacity file system. This file system is not supported in the EOS D30.
Before formatting a CF card with capacity greater than 32MB in Windows XP, change the "File System" menu selection to "FAT" in the Windows XP formatting window.
If you use a CF card that has been formatted with the higher capacity file system on a Canon digital camera that does not support that system, one of the following messages will appear on the LCD of the camera and you cannot shoot a picture:
"No image", "CF card error!" or "CF card full". (Messages are different according to the camera model.)
If you format a CF Card using anything other than the "FAT" file system, you can re-format it again in your Canon digital camera. If in-camera formatting fails, remove and re-insert the CF Card into the camera, and then format it again.