Watch the Gadgets & Gizmos online guitar lesson by Andrew Leonard from Classical Guitar For The Blues, Jazz & Rock Player
"Gadgets & Gizmos" will give you a few suggestions for items to help place your guitar in the "classical" position. There may be something of use for you here, no matter what kind of guitar you play or how you are holding your instrument. The suggestions range from the traditional foot stool placed on the left leg to cushions and devices. One simple solution: if you hold your guitar with a strap, simply raise the strap so that your instrument is in a similar position to mine. Also, there is no need to change anything about your playing (or position) to take this course. I am including this information in case you are curious.