Internet Connection Help!?

[XxMiamiXx P]

Laptop: HP Mini 110 115CA
Window 7

So I was wondering does my laptop already have Wifi on it? If so where do I find it on my laptop and how to do I connect to it?

The reason I'm asking this is because my internet connection is frustrating me to no end, it is always going on and off on me. The connection we use is linksys we have a linksys router if that helps.

The internet bar is always so low its usually at 1 bar or 2 bars and then it disconnects where I have to reconnect it and it works for a split second.

One of my siblings has an acer laptop, their bar is always full and it works everywhere in the house It is always connected where ever they go, they say they have wifi on theirs.

I want to know if mine has it so I can get this internet to always work and stop disconnecting on me?

thanks.