Excited new user with some basic questions!

[Chefcheech]

Hey guys! thanks a lot for hosting this forum, I am just getting into the Dolphin emulator scene and I have some basic questions.

Also, I want everyone to know that while I do love Wii games, I am only interested in playing 1 for now (lets call it a tester, testin out the EMU) and that would be Tatsunoko vs Capcom!

My specs are as follows

AMD Phenoom II X4 955 3.2ghz processor
4 gigs of ram
Nvidia GTX 295
Windows 7 64 bit

1. Is this PC good enough to handle this game?

I hear this game takes a beefy PC to run it

2. I have r4771 as the latest build, am I correct? I went to the downloads section and just DLed the latest one so thats why I assumed

3. I am wondering if its possible to play the game using an xbox 360 controller? I have a usb one that I use for Street Fighter 4 and some MAME games, would that work for this Wii game? I have a Wii and several controllers but (as far as I know) no way to hook them up to my PC.

4. This one is a stretch..............Can I play TvC online using the emulator? Just wondering

Thanks for any help you can give me guys, I will definitely be checking out this awesome EMU!