hey, i found out about this site here at guitartricks, but it has since been buried in the archives.

it's a site called http://www.guitarnuts.com, and it provides a very informative and detailed look at the guts of your guitar and what makes it tick.

the site is devoted to helping you make modifications to your guitar (i think it focuses more on Strats or Strat copies) and there is a very good section on shielding the body cavity of your guitar. it says that this will reduce the hum of your guitar and some people may even think you put in humbuckers. the best part is that it doesn't affect the appearance of your axe.

Check it out.