In this post - http://richardsiddaway.spaces.live.com/default.aspx?_c01_BlogPart=blogentry&_c=BlogPart&handle=cns!43CFA46A74CF3E96!2262 - I showed different ways of starting a process.
Now that a post CTP3 version of PowerShell v2 is available in Windows 7 I can share this. Thanks to however brought it to my attention.
If you are in PowerShell and need to kick off IE then just use
or better still one of these
Its all the little things like this that add up to PowerShell being so useful