Developing Office Web apps w/ ASP.net 4 VS2k10

Hello,
 
I was wondering if it's possible to develop such an app that my users can use like I can, with office documents on sky drive. Something exactly like this : http://sdrv.ms/1adeB2C ( Please specify all prerequisites )
 
Targeted Browsers : IE 8 9 10
 
Thanks,
-Aarsh
 
http://answers.microsoft.com/en-us/office/forum/webapps-word/dveloping-office-web-apps-w-aspnet-4-vs2k10/113babeb-c51c-4931-9f6a-0554714a3d4e
 
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