So when it comes to building a solid mid range to high end computer I know exactly what parts I need to use.  Not so much for lower end parts.
 
Now I'm building a cheap PC for my Step Dad since their home computer just fried and the guy is looking at an $800 Dell...    
 
This PC is only used for web browsing.
 
It just so happens I was at BestBuy two days ago and they had a decent Dynex case on clearance for $18.  It includes a junky 500W PSU I am still undetermined whether or not I will use.  (I figure if using a mobo with onboard graphics, 1 HDD, 1 DVD drive, and 2 sticks of memory, a junky PSU may just be fine.  I've also found that Dynex PSUs are made by some company in China that is actually somewhat known for making decent quality PSUs.  I can't find the link to the article that tested them but they were comparable to OCZ.)
 
I also have 2 spare 1GB DDR2-800 memory DIMMs laying around as well as a copy of XP 32-bit.  I will rip the DVD burner out of my step dad's old computer as that will still work fine.  I will also reuse his monitor, mouse, and keyboard.
 
I was looking at this board, not sure if its really any good.  Newegg reviews should be taken with a grain of salt.
 
http://www.newegg.com/Product/Prod [...] 6813131172
 
 
And like I said, I'd do Intel as well if its cheap enough.  Thanks for the help.
 
So all I need for this build is a CPU, HDD, and mobo.  Which I'm hoping to get for about $200.  I plan on getting a 250GB Seagate Barracuda for the HDD and have been looking at AMD CPUs for the processor.  The AMD 64 X2 4000+ can be had for $55 shipped.  At 2.1Ghz this will be more than adaquate for the usage of this machine.  But with this promo code EMCADCHAC at Newegg you can get the 4800+ for $75 shipped.  I'm not sure if the extra 400Mhz is worth $20.  I may or may not OC the CPU, I'm undecided.  Again, performance is not a big issue here.
 
I've also considered the E2180 CPU but it appears decent Intel boards are more expensive than AMD boards as well.  If you can find a solid Intel board with good onboard graphics cheap let me know though.  And I do know a slight FSB tweak to these things will get a good OC with the stock heatsink.
 
This is what the mobo will need.  It needs to be a good manufacturer, Gigabyte, ASUS, etc.  It needs decent onboard graphics.  It only needs 1 PCI-E X16 lane (No SLI or Xfire will ever go on this machine).  I may eventually put a card in it to run video from the PC to their HDTV but definitely not this month.  It needs to have SATA 3GB/s (even if its only 2)  The mobo needs to be able to use DDR2-800 memory as I already have it.  I'm hoping to find a decent board like this for under $70.  If its possible, great, if not, I understand.  Like I said, I really don't know much about these lower performance parts and any help will be appreciated.
 
 
 
Or how about this Intel Mobo for $60 with the E2160 for $70.
 
http://www.newegg.com/Product/Prod [...] 6813128079

For AMD - This is a Great Board - A Little More, but it's Built-In Graphics are real nice.
http://www.newegg.com/Product/Prod [...] 6813128090
 
This Intel is nicer than the one you selected I think....
http://www.newegg.com/Product/Prod [...] 6813128078
 
The AMD board is nicer than anything Intel has to offer for intgrated graphics so that is why it's higher.

And Here is an OK boxed system for $349.
It ships with a 19" monitor you can sell for about $150 which should drop the total for the system to $200.
 
If you need and OS, that will cost you $100.
So the actual hardware may run you only $100.