Windows 7: Creating WIM image - Windows PE

Hi
I am trying to capture a WIM image of a reference computer for deployment of Windows 7 ultimate x64. The problem is that when i run the command in Windows PE i get the message: "e" is not recognized as an internal or external command.
The command i am running is: e:\imagex.exe /capture c: d:\images\myimage.wim "Windows 7 install" /compress fast /verify
The command is from the book "70-680 configuring windows 7" and the same command is on technet.microsoft.com
I have tried to change the drive-letter accordingly to my computer but gets the same message - also tried to run command without drive-letter, starting the command with imagex.exe or only imagex but get same message:imagex or imagex.exe is not recognized as an internal or external command. I have checked that image.exe is on the cd-rom.

Regards
Kallelurifaks

Hi
The case is solved. I downloaded a new Windows AIK and this time a Danish since i am using Danish keyboard, just to see if that made any difference and it did... The problem was that since the Windows AIK I had was in US-English, I had some problems finding colon : so it seems like I have been using Broken Bar ¦ I can say that I today am the lucky owner of a new .wim file.
Kind regards
Kallelurifaks