[h-e-w] Emacs + W32 + Cygwin Integration

[Will]

Hi,

if i use GNU Emacs(W32 package)
GNU Emacs 22.0.99.1 (i386-mingw-nt5.1.2600) of 2007-04-24 on 
LENNART-69DE564 (patched)
and Cygwin (don't know version, installed this summer)
the first time I call M-x cygwin-shell
I get a *Warnings* buffer saying
'Warning (w32shell): When using 'cygwin' program 'patch' can't be found'
and when I use the cygwin shell with
Cygwin /cygdrive/c > find --help
I get the error
> FIND: Parameter format not correct

After exiting and restarting the shell everything works fine.
Similar problems occur with other commands like 'grep'. There are no 
problems when I use the Cygwin shell standalone (without Emacs).

Can you help?

Best, Will