First get PC Decrapifier
http://www.pcdecrapifier.com/This will get rid of all the "trial offers", Wild Tangent games and other crap they bog down a new computer with.
Then get Malwarebytes Antimalware
http://www.malwarebytes.org/mbam.phpand Spybot S&D
http://www.safer-networking.org/en/index.htmlwhen installing Spybot, uncheck the TeaTimer option-it will work faster.
Then get either AVG or Avast antivirus.
If you install AVG, uncheck the Toolbar option-it's just a PITA.
These are some free programs I use for a lot of things
Instead of Adobe Acrobat Reader-which is now one big piece of bloatware get Foxit Reader
http://www.foxitsoftware.com/pdf/reader/Media Player Classic will play just about anything including DVDs You have to add the codecs for Quicktime and RealPlayer but they're available from the same site
http://www.free-codecs.com/download/Media_Player_Classic.htmAdvanced System Care is a nice utility that will clean registry errors, optimize your system for performance and clear out junk files
http://www.iobit.com/advancedwindowscareper.htmlFor email I would use Thunderbird from Mozilla instead of Outlook
http://www.mozillamessaging.com/en-US/thunderbird/My favorite little program is TrayPlay-lets you listen to music from .wav, .mp3, .wma and .cda without any frills. Uses 37Kb and sits in your system tray. plays files from a folder in order or random, lets you adjust volume and gives track info. I've used it on Windows 98, 2000, XP, XP X64, Vista(32 and 64 bit) and it works on Windows 7 too.
http://chime.tv/multimedia.shtml(It's about a third of the way down the page)