My home computing setup:
I consider it the best "bang for the buck" setup available right now.
Purchase a refurbished dell desktop. There are always several from $200-$300 with decent specs. Mine was $270 over a year ago.
I just pulled this one from the dell outlet site for $249
System Price: $249.00
Processor: AMD Athlon 64 X2 Dual-Core 4000+ (2.10GHZ)
Memory: 1 GB DDR2 SDRAM 677MHz (2 DIMMs)
Hard Disk Drive: 250 GB SATA II Hard Drive (7200 RPM)Modem
48X CD RW/DVD Combo
Purchase a 28" Hanns-G Monitor, I got mine on newegg for $521.23 Shipped
The price jumped back to $569 but watch it...it frequently drops to $499.
Purchase a Cordless Mouse and Keyboard
You can get a nice logitech set like mine for around $30 on ebay
Purchase a High End set of PC speakers used...
Mine pictured (Altec Lansing ADA-880) were $40 from ebay but cost $300 new.
Similar sets to check out are the Klipsch 2.1 set and for a 4.1 sound look at the Z-560 from logitech..these were both $200-$300 speaker sets a few years back.
Reformat the Dell since it is loaded with a bunch of crap
Sit back and relax and realize you have just built the sweetest home theatre system around for under $900 bucks.