You have to open the file you want to resize.
Click on Image, then Resize/Resample
Then in the Set New Size box enter 150 in the width or height box
I enter it in whichever one has the larger number.
Then click on OK
It should shrink the pic down to avatar size.
Then save as whatever you want to call it.
Then load it into RC
I down loaded this program the other day and found it to be pretty easy,
and trust me I can F#$k up anything.