Powershell Beginner

I am now on a mission to learn powershell and am working through the powershell2 for dummies book.
I have got to a spot that has stumped me. I put this into the powershell_ise as a profile startup script
 
function My-Custom-Function
{
Write-Host "Running my custom function!"
}
$psISE.CustomMenu.Submenus.Add("Run Custom Function",{My-Custom-Function},"Shift+Ctrl+f")
 
 
And get the following error
 
You cannot call a method on a null-valued expression.
At line:5 char:31
+ $psISE.CustomMenu.Submenus.Add <<<< ("Run Custom Function",{My-Custom-Function},"Shift+Ctrl+f")
    + CategoryInfo          : InvalidOperation: (Add:String) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
 
I have googled trhe error and just can't work out what the expression is that is null?
Any hints anyone? the code is copy and pasted straight from book.
 
BTW i have inbstalled PowerShell2 onto XP SP3 and get this.
 
$psVersionTable
Name                           Value                                                                                                                                      
----                           -----                                                                                                                                      
CLRVersion                     2.0.50727.3603                                                                                                                             
BuildVersion                   6.0.6002.18111                                                                                                                             
PSVersion                      2.0                                                                                                                                        
WSManStackVersion              2.0                                                                                                                                        
PSCompatibleVersions           {1.0, 2.0}                                                                                                                                 
SerializationVersion           1.1.0.1                                                                                                                                    
PSRemotingProtocolVersion      2.1 
 
But it has installed into this folder
C:\WINDOWS\SYSTEM32\WindowsPowerShell\v1.0\
 

Well, the SubMenus collection is most likely what is null. I would try:
$psISE.CustomMenu.Submenus.Items.Add("Run Custom Function",{My-Custom-Function},"Shift+Ctrl+f")

But that is just a guess. As for the install directory, that is how it does it. Confusing I know.

Thanks Ebgreen, I tried that and got 'close, but no cigar'

Further investigation and I come across this page which explains it.
[link=http://powershell.com/cs/blogs/aleksandar/archive/2009/05/04/what-happened-to-a-custommenu-property.aspx]http://powershell.com/cs/...stommenu-property.aspx[/link]

This is the code I ended up with.

function My-Custom-Function
{
Write-Host “Running my custom function!”
}
$psISE.CurrentPowerShellTab.AddOnsMenu.Submenus.Add(“Run Custom Function”,{My-Custom-Function},”Shift+Ctrl+f”)

Glad you figured it out. I never use the ISE.

if anything the ISE seems handy as an editor and for testing code snipits, i.e. you can copy and paste using CTL+C and CTL+V whereas powershell you have to type it or use edit from the console application bar icon menu

Right click the powershell icon and make sure Quick Edit is turned on. Then you can right click to copy or paste.

Thanks again ebgreen, that works a treat.