hi there all , if your using a multitrack format then try this for a great guitar sound, i spose u dont need to do it on the tracks , do it while recording if u want ..
First get a great amp sound.. then record a track ... mess around with placement like boogie said.. Now on the desk , or on the multitracker , hard pan the guitar left , then send a signal to bus 1 ... or through another channel.. Pan this channel hard right .. now add a little delay and drop the volume so its just below the main guitar channel.. It gives you this great full guitar sound , and also places the guitar in quite a nice place... just an idea ..