Vista - Need info on how to escape double quotes

Hi,

We are developing PowerShell cmdlets and stumbled upon a problem with double
quotes escaping. We are using CreateProcess method to start powershell
process and run a nested powershell process in it. The arguments that we pass
to powershell.exe are the following:
-------------------------------
-NonInteractive -Command & {powershell.exe -NonInteractive -Command '&
{"aaa" -eq "bbb"}' > "C:\output.txt"}
-------------------------------
The idea is that we need the inner powershell to execute some user-defined
script (in this case: “aaa� –eq “bbb�). The outer powershell is needed in
order to redirect the output from the inner one in a file. But when we
execute this we receive the following error in the output.txt file:
-------------------------------
The term 'aaa' is not recognized as a cmdlet, function, operable program, or
script file. Verify the term and try again.
At line:1 char:7
+ & {aaa <<<< -eq bbb}
-------------------------------
We know that we need to escape the double quotes in some way, but we are
unsure exactly how. It appears that the standard escaping rules do not apply
in this case. Any help would be appreciated.

P.S. Instead of using CreateProcess the same result can be reproduced when
invoking the following line from powershell:
-------------------------------
powershell.exe -NonInteractive -Command {powershell.exe -NonInteractive
-Command '& {"aaa" -eq "bbb"}' > "C:\output.txt"}
-------------------------------

Sorry I can't give you any developer help, I'm not one, but this works on CTP2 v2; I used the continuation character ` to avoid word wrapping, but it could be one line.
Also used short names for parameters for the same reason.

# CTP2 v2
powershell.exe -nonI -c {powershell.exe -nonI -c {& {"aaa" -eq "bbb"}`
# you can also encode the command and pass it to PowerShell.exe's
# -EncodedCommand parameter
$cmd = 'powershell.exe -nonI -c {& {"aaa" -eq "bbb"} > C:\output.txt}'
$encCmd = [Convert]::ToBase64String([Text.Encoding]::Unicode.GetBytes($cmd))
powershell.exe -NonInteractive -encodedCommand $encCmd

--
Kiron

Thanks very much for your help. I'm using PowerShell 1.0 and encoding the command worked out perfectly.