What updates and programs should be deleted?

I'm performing maintenance on my aging P3 desktop, which has a whopping 9gb hard drive, and 128mb of sdram. So as stated above, I need help on what I should remove, but the red programs are what I want to keep.

Here they are:

7-Zip 4.42
Ad-Aware 2007
Adobe Flash Player ActiveX
Adobe Reader 8.1.0
Adobe Shockwave Player
Amazon MP3 Downloader 1.0.0+6
Apple Mobile Device Support
Apple Software Update
CCleaner (remove only)
CDBurnerXP
DeviceFunctionQFolder
DeviceManagementQFolder
Exact Audio Copy 0.99pb3
Hotfix for Microsoft .NET Framework 3.0 (KB932471)
HP Deskjet 5900 series
HPDeskjet5900Series
iTunes
Java(TM) 6 Update 2
Microsoft .NET Framework 1.1
Microsoft .NET Framework 1.1 Hotfix (KB928366)
Microsoft .NET Framework 2.0
Microsoft .NET Framework 3.0
Microsoft Base Smart Card Cryptographic Service Provider Package
Microsoft Compression Client Pack 1.0 for Windows XP
Microsoft Office Professional Edition 2003
Microsoft User-Mode Driver Framework Feature Pack 1.0
Mouse Suite
Mozilla Firefox (2.0.0.11)
Mozilla Thunderbird (2.0.0.9)
MSXML 4.0 SP2 (KB936181)
MSXML 6.0 Parser (KB933579)
MusicBrainz Picard 0.9.0
NVIDIA Drivers
Paint.NET v3.10
QuickTime
Security Update for CAPICOM (KB931906)
Security Update for Microsoft .NET Framework 2.0 (KB928365)
Security Update for Windows Internet Explorer 7 (KB929969)
Security Update for Windows Internet Explorer 7 (KB933566)
Security Update for Windows Internet Explorer 7 (KB937143)
Security Update for Windows Internet Explorer 7 (KB938127)
Security Update for Windows Internet Explorer 7 (KB939653)
Spybot - Search & Destroy
Tweak UI
ViewSonic Monitor Drivers
WebFldrs XP
Winamp
Windows Communication Foundation
Windows Imaging Component
Windows Internet Explorer 7
Windows Media Format 11 runtime
Windows Media Player 11
Windows Presentation Foundation
Windows Workflow Foundation
Windows XP Service Pack 2
Yahoo! Install Manager

I also have a question, do I really need 3 different .Net Frameworks?

 

Regarding the .NET Frameworks: unless you are running applications that need the .NET Framework, you don't need any of them. Also, most applications written for 1.1 should work with 3.0, so you should be OK if you uninstall 1.1 and 2.0.

Notice how I said "should"?

For all other applications, if you don't need them, remove them. Anything with "Windows" is usually a recommended update, so I wouldn't touch those. MSXML 6.0 doesn't replace 4.0, so you need both of those. DeviceFunctionQFolder and DeviceManagementQFolder are HP utilities of some sort, so I would guess they are necessary for your PC. WebFldrs XP isn't necessary (unless you use it, of course) and can go.

The rest of the apps you should be able to figure out if they are necessary.

You know, 20gb drives are very cheap - I would seriously consider upgrading the drive for a few bucks. You'll notice a speed increase.

 

I'd remove Acrobat Reader and go with Foxit Reader personally.

 

Thanks, but I uninstalled the HP Apps, leaving only the driver, so are the device folders necessary? I guess I'll Google it. I'd love to use Foxit, in fact, I've used it, but it doesn't open inside Firefox, which is the only reason I don't use it, I guess I'm a nitpicker.

 

Although Foxit Reader is a nice application, it doesn't handle protected files very well. That one problem forced me to go back to Acrobat Reader.