I'm wanting to install a wireless network the will span from my house to the building behind my house its about the length of a football field away.I know very little about this so I was wondering what would be something that good to get or if this would even be possible?

As long as you have line of site between the 2 buildings, this should be no problem. At work we use (2) D-link DWL-900AP+'s (about $50 each) with (2) of D-Link's ANT24-0800 high gain antennas (about $100 each). The antennas are omni-directional and are safe to use in all weather conditions. I have configured the access points to work in wireless bridge mode and it just makes it appear like it is one big network. You should have no problems with this equipment and distance. I am currently using this setup at 4 locations and distances up to 1100 ft. I have also used the DWL-2100AP+ for the wireless G standard and have had the same success. Democrats feel guilty for everything they have. Republicans feel they've earned everything they've stolen.

Ok sounds great Ill give it a try.

If I go with the DWL-2100AP+ do I still need the ANT24-0800 high gain antennas you were talking about?

You will be better off with using high gain directional antennas instead of omni-directional. But in either case, you will probabably need some form of high gain antenna. But try it first and see what kind of range you get. Hawking has several antennas.

You will need the high gain antennas no matter what access points you use. As far as which high gain antennas you use, while directional antennas are usually better, I don't think it will be 100% necessary in this situation. I have found that in most cases outdoor directional antennas end up having a higher price tag. As long as you are not dealing with an elevation change or a source of extreme interference, the antennas I have mentioned should be just fine. That being said, I would recommend directional, but don't want you to have to break the bank. Democrats feel guilty for everything they have. Republicans feel they've earned everything they've stolen.