Hotswp? Well, FIRST do a search on this forum for it, as I'm sure that it is listed somewhere, but do NOT attempt it on something that is a half-assed reply by one of the posters, make SURE it souds nice and clear before you do it.
The basic of it is booting an Xbox WITH a working modchip, going into X3CL, and going to the flash option, and BEFORE you start flashing it you pull off the chip SLOWLY not toasting yourself by touching pins, and sliding your chip onto the header, and then select the bank you want to flash on the switch. Then you flash.
Let me REPEAT,..this is NOT a step-by-step, and I FULLY reccommend that you search for the sticky with the PROPER instructions. This was just to give you a general idea.
Happy modding!