RetroGamer96

Hey, I would not recommend unplugging the top fan, that fan is what also helps cool the video card. I also thought of different ways of cooling my T3500, so I have including pictures of what I did to mine, hope this helps. 
 
 

It is the black 5 pin connector next to the floppy drive connector. To be able to use it with a standard 4pin fan you will need an adapter like this one. 
http://www.ebay.com/itm/Latch-Dedicated-Fan-5-Pin-To-4-Pin-Adapter-Interface-Connector-Cable-For-Dell-/322542434310?hash=item4b1906f806:g:qLkAAOSwGJlZNBNc
 
 

Continued:
 
Putting the parts in the case. I will be possibly changing out the power supply, but I have had these pictures taken for awhile. 
 
Placing in the motherboard, cpu and video card: 

 
Inserting the Voodoo 2 Sli:

 
Sound card, network card, and hard drive placed:
 

 
inserting the optical drive, zip drive, and floppy drive:
 

 
Front of the computer with panel back on:

 
Some messy wires:

 
Will continue in another post.