Looking to build first PC..

Hi Friends,

First post here.. I was a windows guy for a looong time, and have been using macs for the last 5 years.. I like them well enough, but I have a few programs that I still need to use windows for.. Primarily, I fly radio controlled helicopters for fun, and have a few simulators that are PC based only.. I have my old PC but it is not up to the task to running these simulators. I've been looking at putting together something that I can connect to my HDTV (55 inch Samsung) so that I can use my sims on the television.. I'm fairly adept at putting things together, so I don't doubt I can do this, but I am trying to keep it on a budget (wifey is already looking at me like I'm nuts..)

I went on TigerDirect.com and was so overwhelmed by the choices that I thought I should ask for some suggestions.. Soooo.. Here is what I'm looking for, and I'm hoping you guys may point me in the right direction.. Seems like it would be easy to overpurchase when building your own PC..

I want something that can handle these graphics programs well.. My TV is a older HDTV, and is limited to 60HZ.. I'm not positive, but does this limit my frame rate to 60FPS? IF so, I won't need to get run faster than that.. I need a HDMI output obviously.. Keyboard and wireless mouse.. Wireless Internet ability.. Black case.. I have a older copy of windows XP that I can use, but if I would be best served with 7 or 8, I can do that as well..

Anyway, thanks very much for any guidance you guys can provide on something that will run these programs well on my HDTV.. I'm posting the "advertised minimum system requirements" below.. If that helps at all..

Phoenix RC Sim:
Microsoft Windows XP, Windows Vista or Windows 7 operating system
• 256MB system memory (RAM)
• 1.5 GB free, uncompressed hard-disk space*
• ATI Radeon 9800/NVidia Geforce Ti4200 with at least 128MB memory
• Microsoft DirectX 9.0c or higher
• DVD-ROM Drive for installation
• 1 free USB 1.1/2.0 port
• 100% DirectX 9 compatible sound card (optional)

RealFlight:
For best graphical performance
Dual Core 2.4GHz CPU
2 GB RAM
3D Accelerated Video with: 512 MB dedicated video memory

Thank you, thank you, thank you....

John