Have a big problem a Camera would help lots need advice

[LandslideGal]

Hello

from the landslide in California USA, my community association is up to no good- they have disabled the gate camera to stop recording all the dump trucks going to dump on our landslide right smack infront of my HOME , I really want to put a camera on them !! I have an ancient home wireless b/g Dlink access point and DSL Ethernet Cable router hooked up and my home network works and my wireless network works...all happy 123 encrypted.

I have about one million questions and need recommendations...I stumbled here I hope this is the correct place, I am a programmer -NOT a network engineer but bumble through ok on setting stuff up.

My view window view is ok but an out side camera would be better! Q1) how does the signal get inside to my guttless Access Point? is there a camera where the wireless antenna can be on a wire through the wall into the house and the camera still lives out side?

I just want the pictures to be taken when there is a car or truck or something moves big not leaves..is that possible. I do not need live video all of the time I just want to record activity...

How does the picture data file get from my home network up to a website?

Can I use my own website to hold the image or do you have to belong to some special website service?

I cannot spend crazy money but I want a decent photo for about 300ft? I run XP PRO. I have an older MAC running OSX I think but it is usually turned off under used only to test websites on MAC.

Thanks for any any help -advice sorry if this is the wrong place