Materials for custom amp rack

The problem is that since I'm such a newb to building anything or even using most tools, I don't really know what tee nuts or socket head bolts are.  Home Depot and those other stores don't really have many employees in their store to help rookies like me out.  The people who I have found in there, are young and usually know about as much as me.  They get paid crappy wages, have little or no training of the industry and how to use what they sell, didn't get a raise this year, and all they want to do is go home.  So I'm not the type of person who can go in those stores and will know what I need to buy.  And since the employees there are clueless, they can't help.  Nobody in a Home Depot has used plexiglass or knows anything about building car audio enclosures.  If I even ask them a question about it they look at me like I have 19 heads.  If you can give me links to the exact items you think I'll need to buy, that would help.  If I have to buy the stuff online and pay shipping or a little more for it, I don't really care as long as I know I'm buying the right equipment and supplies for what I'm trying to build.  So links to the websites that may sell what I need, in addition to the part numbers so I can find that exact items, would really help me and I'm sure a lot of other newbs out. 

The one frustrating thing about this forum is when someone awesome like Tim comes online and tells us about a product he uses like Rigid filler plastic but then does not include a link to a company that sells the stuff online or a part number so we can actually go find it and buy it. 

Plan, Research, Do

Here's a socket head cap screw:

I did a search and here's a few joints I came up with:

http://www.fastener-express.com/

http://www.boltdepot.com

http://www.mmsacc-stainless.com/html/socket_head_cap_screws.html

And here's a Tee Nut:

A few places that popped up doing a search for tee nut:

http://www.carrollland.com/shopping.asp?id=...

http://www.phoenixfastener.com/viewprod.asp?index=180&cid=9

They sell some socket head screws and tee nuts at Lowe's and Home Depot. Both are in the Nut/Bolt section. Tee nuts are normally sold 4 or so to a bag and the socket head screws will be in the specialty fastener drawers. Hope that helps a little...

Maybe this one will work....