R help - Feb 2004 - xtable table placement

Hi all,

I'm wondering if there is a way specify LaTeX table position within a a
call to xtable.

xtable(adataframe) produces LaTeX code for tables containing:

    \begin{table}[ht]
                 ^^^^

I would like to specify the position parameters.  Looking at the code
for print.xtable I was hoping 

    > xtable(adataframe, table.placement = "hp")

would work, but it does not.  Am I missing something simple?

Thanks,

+ seth