NIS 2010 error when installing

Hello everyone and thank you for this forum!

 

I just purchased Norton Internet Security 2010 for my Dell PC but am unable to get past the setup window with this error message:

 

This system does not meet the minimum requirements for installing the software.  Setup will exit.

 

That is as far as I can get!

 

Before I started, unistalled old Norton System Works and Firewall using the Norton Removal tool and did a disk clean up.  I have the following:

 

Windows XP Home Edition 2002 SP3

 

Free Disk Space : 121GB

Intel Pentium 4 CPU 3.20 GHz, 1GB RAM

 

I now have no protection at all except for Windows Defender and wondering where to go from here.

 

Any suggestions are much appreciated but please bear in mind that I am not a computer tech!

 

Thanks in advance.