what can i upgrade?

I am probably in the wrong place for this, if so, please tell me where to go. =/

Now, as for my question, my system information is as follows:

OS Name Microsoft Windows XP Home Edition

Version 5.1.2600 Service Pack 2 Build 2600

OS Manufacturer Microsoft Corporation

System Manufacturer Hewlett-Packard

System Model HP Pavilion Notebook PC

System Type X86-based PCProcessor x86 Family 6 Model 6 Stepping 2 AuthenticAMD ~1000 Mhz

BIOS Version/Date Insyde Software JA.M1.03, 8/30/2001

SMBIOS Version 2.3

Windows Directory C:\WINDOWS

System Directory C:\WINDOWS\system32

Boot Device \Device\HarddiskVolume2

Locale United States

Hardware Abstraction Layer Version = "5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)"

Time Zone Eastern Daylight Time

Total Physical Memory 512.25 MB

Available Physical Memory 136.01 MB

Total Virtual Memory 2.00 GB

Available Virtual Memory 1.96 GB

Page File Space 1.13 GB

Page File C:\pagefile.sys

What can i upgrade!? my computer is really bad(about 5 years old now) and i need to upgrade it!

[1180 byte] By [Anonymous00000000000000000000] at [2008-2-25]