I would first run your existing portfolio thru the xray and find out what your current exposure to commodities is.  I don't own a natural resources fund but am equal weight energy and about three percentage points overweight industrial materials as compared to the S&P.  If oil were to drop precipitously were Coy to invest, I might add a NR fund such as PRNEX but then again I might not. 

Note to Coy:  Please invest in this sector as a marked decline in oil would definitely help by business's bottom line!  Also throw some money in MOO as I am paying way to much for groceries as well.  I am sure glad Bernanke has got this inflation thing under wraps (oy vey)!

Another Dan