How can I setup wireless internet portion of my mac?

So I downloaded veoh player and other players that the internet said would make videos buffer faster.
I am currently a bit confused on applying for a Specialist role at my local Apple store. On there website they job role is just named as 'Specialist' however i have seen on the internet that there is also ' Mac specialist'. Is there a difference between just a specialist and mac Specialist or are they same.

DVD To PSP Converter help you convert dvd to psp video, and DVD movies to MP4 for playing on PSP.

I definitely know a lot more about Ipod's and iphone's than the mac computers so i am just wondering if there is a difference between the two?
Apple is general and could be anything that is under the apple brand. Mac is apple computers. A Mac specialist is also a apple specialist, but an apple specialist wouldn't always be a mac specialist.
Hi, I just got a mac a few days ago and I want to watch videos online.
However, they aren't working. Is it just the mac, the internet, or can I do or download something to make it buffer faster?

DVD to Apple TV Converter, award-winning DVD to Apple TV Video Converter to rip, proves professional to convert DVD to Apple TV video easily.

Thanks
The mac is plugged into a router, and then wirelessly transmits the internet, can the PS3 utilize this? or can i use another mac laptop to pick up this shared network and share it to the PS3 using an ethernet cable?
Usually when i launched halo trial on my Mac i would get a pop-up box that was titled "Halo Graphics Settings". I accidentally checked the box on the bottom-left corner that says "Don't Show This Again".
Then you have to have an Ethernet cord that can plug into it. Go to your local tech store and ask for an Ethernet cord. Plug one end into your router then the other into your computer.

Rip DVD to BlackBerry copy dvd and convert dvd to blackberry phone avi, divx, xvid, mpeg4, h263 movie and mp3, wma, aac ringtone music.

Connecting ANY computer to Ethernet is the same: One plugs an Ethernet cable (CAT5 with an RJ-45 plug) into the Ethernet port that is attached to the NIC (Network Interface Card), and the other end into either an Ethernet wall socket or directly into a router.
I need to know how to reopen that pop-box on my Mac so I can choose the option of playing in a window instead of fullscreen.