Setting intial path under windows to MyComputer in Interactive file browser

Hello everyone,

How can I specify in tcltk file browser the initial directory to
"MyComputer" in Windows where Drives and Partition are accessible?

That is a Tk question, not an R question.  I presume you might mean via
tk_getOpenFile -initialdir ?   It's a subtle one, as 'My Computer' (sic, 
with a space') is not an actual directory and you need to ask elsewhere.

And just a little question if anyone knows, is there a way to use the
function choose.files under windows to select a directory?

Only if there is a file in the directory.  Then select any file and use 
dirname() on the result.

R-devel has a function choose.dir that makes this easier using the same 
widget used for the 'Change dir ...' item on RGui's file menu.

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595