Approximate Purchase Date: This week
Budget Range: $200 ~ $400 (the lower the better, not counting rebates but is welcome for parts that noticeably will improve performance)
System Usage from Most to Least Important: Surfing the internet (lots of tabs open), Image processing(simple photoshop, etc.), Watching movies.
Are you buying a monitor: No, no keyboard, no mouse, no speakers.
Do you need to buy OS: If fits into budget, then yes/
Preferred Website(s) for Parts: newegg.com, amazon.com
Parts Preferences: None, but quality brands are appreciated.
SLI or Crossfire: No
Your Monitor Resolution: (1600x1200, 1680x1050, 1920x1080)
Additional Comments: Preference for quietness. Leave room for upgrades (e.g: 1x4gb ram not 2x2gb)
And Most Importantly, Why Are You Upgrading: Upgrading 6-7 year old home office PC with something that can do most basic things.
Okay, here's a quick budget build I put together... I actually just put together this exact same build for a customer (except with a AM3 motherboard, and a Athlon II X3- he needed an IDE channel, and it's really hard to find a LGA 1155 mobo with an IDE channel.)
And you have a $398, fully functional entry level gaming/office PC. If you want to help your office performance you can ditch the video card (use the igp) and buy more RAM, or an i3... but I would stick with the dedicated card, for more system balance.
You can buy whatever version of Windows you want. If you want to connect three monitors, you will need a discrete GPU like this HIS Radeon HD 6450 since the onboard video will only support two displays. You won't need anything more powerful if you're not playing games.