[R] removing NA from a data frame

[Sam Steingold]

Hi,
It appears that deal does not support missing values (NA), so I need to
remove them (NAs) from my data frame.
how do I do this?
(I am very new to R, so a detailed step-by-step
explanation with code samples would be nice).

Some columns (variables) have quite a few NAs, so I would rather drop
the whole column than sacrifice all the rows (observations) which have
NA in that column.
How do I remove a column from a data frame?

Thanks!

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Sam Steingold (http://www.podval.org/~sds) on Fedora Core release 4 (Stentz)
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