Question : PowerShell installation and pop-up dialog box capability

I'm interested in starting to use PowerShell to install my database on users PC.  I've got a few questions:
1) Can PowerShell display a dialog box?  If so how would I do the following:
       a) Display dialog asking user "Do you want to install the database", with Yes/No buttons
       b) Code to process Yes or No response

2) Can my users run my PowerShell script by clicking on a shortcut?  If so, what do I need for shortcut properties (e.g., c:\winnt\powershell  j:\commonstorage\myscript.scr).

3) Can all my users run PowerShell without installation of any additional software?  They all have Windows XT SP2.

Answer : PowerShell installation and pop-up dialog box capability

VbScript should be good, even if it's a bit short on the interactive side unless you're digging into HTA. At least it's available by default :)

Chris