sorting a dataframe

["Data Analytics Corp." <dataanalytics@earthlink.net>]

Hi,

I have a simple dataframe, x, of two columns:

  year  month
  2008  1
  2007  4
  2007  5
  2007  6
  2007  7
  2007  8
  2007  9
  2007  10
  2007  11
  2007  12

that I want to sort by year, then month.  Forget the fact that I could 
just move the first row to the end of x to get what I want; this is just 
an example.  I used
         sort.col(x, "@ALL", 1:2, ascending = T)

and got

  year month
  2007  8
  2007  9
  2007  10
  2007  11
  2007  12
  2007  4
  2007  5
  2007  6
  2007  7
  2008  1

when, of course, I should have gotten

  year  month
  2007  4
  2007  5
  2007  6
  2007  7
  2007  8
  2007  9
  2007  10
  2007  11
  2007  12
  2008  1

I also tried sort.col(x, 1:2, 1:2) and got the same result.  Why?  This 
should be a simple sort.   I put the data into Excel (sorry about that) 
and got the correct sort.  Why not here?
Thanks,

Walt Paczkowski