Ok, I didn't know if he was doing heavy photoshop/3D modeling type stuff, where hardware acceleration would help. I did a quick 5 minute part out with the assumption it won't be OCed (low end motherboard and non-K CPU). As of time of posting, this is $966 excluding MIRs, so I dunno if you want a nicer case or maybe look for a 1440p screen (the LG is only 1080p, but IPS which is nice).
Case -
http://www.newegg.com/Product/Product.aspx?Item=N82E16811147123 Cheap mATX Rosewill, but you can bump it up if you need it
HDD -
http://www.newegg.com/Product/Product.aspx?Item=N82E16822236404 2TB WD Green, $10 off
Screen -
http://www.newegg.com/Product/Product.aspx?Item=N82E16824005495 27" LG IPS $60 off
GPU -
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130814 GT620, 1xDVI and 1xHDMI, $10 MIR
PSU-
http://www.newegg.com/Product/Product.aspx?Item=N82E16817104183 500w FSP. Heard FSP was good, but this is their low end line. Should be good anyway for a non OCed cpu and low end GPU. $8 off
RAM -
http://www.newegg.com/Product/Product.aspx?Item=N82E16820104360 8GB Kingston, may bump it up to 16GB if funds allow it. $25 off
Mobo -
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128667 GIGABYTE GA-H81M-DS2V
CPU -
http://www.newegg.com/Product/Product.aspx?Item=N82E16819116898 i5 4670
SSD -
http://www.newegg.com/Product/Product.aspx?Item=N82E16820211597 Adata 256GB SX900, currently $70 off.
I don't know if anyone else has any suggestions.