Raising the mast alone is accomplished with the shrouds port and starboard always attached, slide the mast back so that the rear pin lines up in the tabernacle, and insert it. This task is easier if you can rest the back of the mast in a mast support through the gudgeons. Attach a 3 foot line between the head end of the jib halyard (where it usually attaches to the sail) and the stemhead, and grasp the other end of the halyard tail in one hand taking up the slack, as you walk the mast up with the other hand. When it is upright, cleat the halyard, (which will hold the mast in place), insert the forward tabernacle pin, and go to the bow and attach the forestay to the stemhead. Release the halyard and remove the short bit of line you used to extend it.
Check this site for pictures of the mast raising leash and mast supports:
http://groups.msn.com/RogerConrad/shoebox.msnw