You won't break anything Captdan. Just take your time. Wasn't it Baldeagle that studied the components and the process of building a machine for 3 months prior to actually building one?
Most errors are the simple result of not getting the connections in completely. What took the longest for me was getting the fan on correctly. That was because I put the fan on after I put the mainboard in the case and it was a big heatsink and fan.
I never saw the budget amount. I looked through the thread a couple of times. Over lightly though.
What you can do to cut costs is skip the sound card until later and use Windows XP home. That will save you about $130. Yeah I know xp pro is better but I play with XP home. Seems to do well. Also a sound card is better but you can get by with on board sound for a while as long as you keep your system clean of any junk. The E8400 can handle it.
Here's a quick overview on how to build:
1. Assemble the mainboard. Insert your CPU, heatsink and fan. Insert your ram. Both the CPU and ram only go in one way. The CPU should literally drop in.
2. Put in your Power supply.
3. Some cases have modules that pop out for the hard drives and DVD Roms. If not put these in next. If so then you can put your mainboard in next.
4.Once the mainboard is in connect the Power supply cables to the fans, drives, and of course the mainboard.
5.Then put in your video card and sound card. Now this can be done intermittently with step 4 depending on convenience of cable but definitely hook up your mainbard first. Otherwise you may have trouble getting to the connections.
6. Put your operating system in the DVD drive and turn it on. Oh, make sure in the bios, (see instructions for that) that you have it boot from the CD/DVD drive first.
I may have left off a couple of minor steps but this is about it. Hopefully others will fill in the blanks.
Addendum: Don't be fooled by the 6 steps. It takes time to hook up all the cables and get the components in correctly. Just take a break every now and then. It will probably take you all day or longer.