>> About the case, I noticed that the PSU comes with the case, what about the fans? Do I need to buy the cooling or does it also come with the case?
You can buy extra ones but unless you're running really hot, 3 for the entire PC should be OK.
>>About the memory, the store does not have Corsair brand of ram, is Kingston my best choice next to Corsair? Or should I stick with Corsair and find it elsewhere?
I definitely would suggest Crucial. Their quality is Excellent and their customer service is great.
- The MOBO supports up to 4GB of DDR400, is DDR400 = PC3200? Are they compatible?
>>Since this is my first time building, I am wondering when I am actually building it, should I be wearing some kind of glove instead of bare hand? And what extra cables or tools do I need?
No glove is necessary. Make sure you wear an anti-static wrist band when you're building it. You can go an extra mile and buy a anti-static pad to lay your PC on it while you're building it but i would think you can use a piece of large wood slab laminated so that there's no slivers that can get caught.
The only time you shoudln't wear the wrist band is when you're handling the PSU.
>>Please advice me any hardware I should change in my list. And is 380 W of PSU enough for it?
380 is nowhere enough for your specs. Get atleast 450 wattage - higher if you can afford it.