How to change length of line in Photoshop CS3

I must be being really stupid, but I can't find out how to change the length of a line I've drawn in PS using the line tool. Can anyone help me out?

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I must be being really stupid, but I can't find out how to change the length of a line I've drawn in PS using the line tool. Can anyone help me out?

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Did you draw it as a shape layer, as a path, or as pixels?

In any case, use the Transform command.

Which type of line did you draw?

Filled pixels, Shape Layer or Path?

If filled pixels, then it's just like with any other pixels—you have to erase them, or or make a selection and delete them.

If you created your line as a Shape Layer or as a plain path, they are both defining the line as vector elements. If you look very closely, you'll see that the line is actually a thin rectangle-shaped path—a box—if you will.

In this case you can use the Path Selection Tool to select two of the anchor points and move them manually, or you can select the entire path and then use the Transform Path function (Command + T) and input values in the Options Bar to transform the points numerically.