what+windows+7+features+should+be+on+and+which+ones+off?

wow. your insight is amazing but I think they were asking what features specifically are ok to have installed.

There's a guide here for Vista.

http://www.bleepingcomputer.com/tutorials/windows-vista-feature-guide/

There's not much change in Windows 7.

The settings after Windows has been installed will work for anything a normal user will use.

This dosent completly answer the  question.  Its obvious that you turn on  the ones you need but which ones are that by default.  Which ones are turned on automatically after installing win7. Like..........Ihave no idea what xps services are or what about telnet client and server..................  im running win7 and have wireless laptop and wired computer that belongs to a homegroup that uses  the internet as well as printer .  whats the programs that need to be turned on?

Hi Mary,

You can turn on the Windows features that you use in the operating system regularly and turn off which you do not use at all in your computer.

Some programs and features included with Windows, such as Internet Information Services, must be turned on before you can use them. Certain other features are turned on by default, but you can turn them off if you don’t use them.

To turn a feature off in earlier versions of Windows, you had to uninstall it completely from your computer. In this version of Windows, the features remain stored on your hard disk so you can turn them back on if you want to. Turning off a feature does not uninstall the feature, and it does not reduce the amount of hard disk space used by Windows features.

Please provide us more information about the exact issue to help you fix it as soon as possible by referring the below mentioned link:

Suggestions for asking a question on help forums

http://support.microsoft.com/kb/555375

For reference:

Turn Windows features on or off:

http://windows.microsoft.com/en-us/windows7/Turn-Windows-features-on-or-off

Hope this helps.