Simple "Convert" won't work

[HowBazaar.ca]

Somebody please help.

I have the following code in PHP.

----------------------------------------------
if (file_exists('image.jpg')) {
echo 'file exists';
}

exec("usr/local/bin/convert image.jpg image.gif");

if (file_exists('image.gif')) {
echo 'it worked';
} else {
echo 'no you fool, doesnt work';
}
----------------------------------------------

The image resides in the same folder as my code. As you might have guessed, I get the "file exists" and then "doesnt work" message.

What is wrong?

Thanks.

[fisheggs]

Just a guess, but should there be a '/' before the usr in

exec("usr/local/bin/convert image.jpg image.gif");

[HowBazaar.ca]

Thank you fish eggs, that was the problem.