Probably simple fix but annoying problems w/M-6834

I have a gateway m-6834. Its overall been a good laptop however, its had a couple bugs that I picked up on a couple months after I bought it(which was April 08)
For instance:
1.) many times when im typing along and type the word "here" or any 'ere combo, i get hegre or thegre unless I finger poke type it.

2.)Ive always had a trouble with my windows expanding on there own. I often surf with the browser in the fill to screen type, however it will out of the blue just blow up to the full screen view.. Ive tried to pay attention to if its a certain key combo that im hitting but never seems to do it before my attention span fades... Explorer or Firefox it doesnt discriminate...

3.)Lastly and this has easily become the most annoying situation. I began connecting to the web via a Verizon wireless air card shortly before last christmas as i could no longer stand dialup. All was great for the first few months til aprilish. Then it began just disconnecting itself for no reason. The light on the card would go out and disconnect from the net. Occasionally the light would come back and I could reconnect but usually I had to pull and reinsert it. This went out for a couple months before I called verizon. They claimed bad card and sent me another one. The replacement one was no different, so i wondered if it was the computer? I dont have a whole lot of spare time to spend on it so ive just dealt with it. But now w/in the last week its gotten worse yet. The card continues to shut off but now irregardless if the cards shuts off or I happen to disconnect, I have to reboot my computer to be able to connect again. When I try to connect again w/out rebooting, I get a error 720 "A connection to the remote computer could not be established. You might need to change network settings for this connection" My limit help searching has gotten me nothing
Any ideas on any issues? Thanks in advance..