Yes, there is no problem installing that version of .NET on the server.
File services
Print Services
.NET Framework is part of the Operating System rather than the hardware. It can be installed on Windows based systems..NET 1.1 comes preinstalled in Windows Server 2003, .NET 3.0 in Windows Vista and Windows Server 2008, .NET 3.5 in Windows 7 and Windows Server 2008 R2.
1) Make sure your PC meets the minimum system requirements to install Windows Server 2008. 2) Buy Windows Server 2008. 3) Put the DVD in the drive and reboot your machine. 4) Boot from the DVD 5) Install Windows Server 2008
servermanagercmd.exe -showroles
I assume you mean the OS on the server, if you want to go with windows your looking at windows server 2003 / 2008, windows small business server, windows home server. However alot of admins prefer linux, try FreeBSD.
Initial Configuration Tasks
partition the disk
Windows Server 2008 is the most recent release of Microsoft Windows' server line of operating systems. Released to manufacturing on 4 February 2008 and officially released on 27 February 2008, it is the successor to Windows Server 2003, released nearly five years earlier. Like Windows Vista, Windows Server 2008 is built on the Windows NT 6.0 kernel. A second release, named Windows Server 2008 R2, is currently under development.
Initial configuration tasks screen
One would be Microsoft Exchange, but there are literally dozens if not hundreds.
For Windows Server 2008, it should be IIS 7.