Can't get xp sp3

I'll start with this-
Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows XP Professional,, 32 bit
Processor: AMD Athlon(TM) XP 1800+, x86 Family 6 Model 6 Stepping 2
Processor Count: 1
RAM: 1023 Mb
Graphics Card:
Hard Drives: C: Total - 15005 MB, Free - 12348 MB; D: Total - 39205 MB, Free - 5301 MB; E: Total - 39995 MB, Free - 7780 MB; F: Total - 40382 MB, Free - 24772 MB; G: Total - 39393 MB, Free - 7703 MB; H: Total - 38640 MB, Free - 7080 MB;
Motherboard: ASUSTeK Computer INC., A7V333
Antivirus: None
I reinstalled xp pro. So I tried to go to windows update to get all the updates, including sp3 but can't. The message I get in a pop up box is -Internet Explorer cannot open the internet site http://support.microsoft.com/kb/2497281. Operation aborted
And then the page has the typical Internet explorer cannot display this page message. What am I missing?