the msiexec thingie you see is for meecrosoft .NET framework. You need that to run certain applications, such as that tuneup thingie you are using in the picture.
the csrss thingie is a dynamic link which windows requires to do resource allocation, so its kinda critical.
as for the svchost thingies, its normal to have a multiple number running at each time as each fulfills a different task, such as usb port detection when you plug in a usb device, LAN detection on your wireless/10/100 port, printer spooling, etc...
