Too many antivirus programs

I installed the free version of AVG and I am quite happy with it but the PC came with Microsoft Security Essentials.

Can I remove MS with complete safety or should I get rid of AVG?

:cool:Thanks

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows XP Professional, Service Pack 3, 32 bit
Processor: Intel(R) Pentium(R) 4 CPU 3.00GHz, x86 Family 15 Model 4 Stepping 3
Processor Count: 2
RAM: 2038 Mb
Graphics Card: Intel(R) 82945G Express Chipset Family, 224 Mb
Hard Drives: C: Total - 70017 MB, Free - 51044 MB; D: Total - 6275 MB, Free - 3453 MB;
Motherboard: Dell Inc., 0HH807
Antivirus: AVG AntiVirus Free Edition 2013, Updated: Yes, On-Demand Scanner: Enabled