Question on my cooling/cables on my P180

[ShazK]

Alright, I need to know how well my cooling is and if my cables are messing things up as messy as they are.

Here is a pic:
http://img352.imageshack.us/my.php?image=computer817050010zm.jpg

That's a 3000+ Venice core and it usually idles around 36 degrees, ambient is similar too apparently... how do I test it under load? I'm new to this all, remember?

Well, like, SpeedFan says Temp1 38, Temp2 38, Temp3 -48, HD0 32, Temp1 36... what's what?

Also, my GPU (A Leadtek 6800GT) under the Nvidia settings says its 62 right now, it usually seems to range from 62-66 idle if I can recall right, but it says the ambient temps are 47 degrees.

Sooo... few questions then:
How can I better organize my cables? How do I test my temps under various loads, and is there a better temp monitoring program (nTune monitor seems to not work with this BIOS version and I don't feel like reflashing just for that)?
And what are good and bad temps for various components?
Should I block off the VGA duct with tape since I'm not using it... would that help my graphics cards temps?

Any other info you need so you can help me? I want everything nice and cool as best possible before I attempt any OC'ing.

For fun here's another messy pic: http://img372.imageshack.us/my.php?image=computer817050037qc.jpg

More where that came from if you want.

 

[kirbymixmasta]

You probably wanna move that huge clutter of wires in the middle of the case to behind the motherboard or behind your 3.5" cages.

 

[linjy2]

prime95 to test the load temp.
i ran my usb cables under my sound card.
Like this

 

[ShazK]

Hm. Thanks for the suggestion about the cable under the sound card... part of the problem is how all my fans are connected.. if you can see how the red black and yellow cables are all connected you can tell it'll be hard to move it anywhere else... also, with the 24 pin thing being to the left of the heatsink, I dunno what to do... to put things under the mobo I'll have to dismount it, won't I? This is all so hard.

So, yeah, should I block up that VGA duct and what are good temps?