i got this problem i linked all the doors and that stuff and it should work but when i go ingame it doesnt show my farm where is should be it didnt even placed it ingame.

There are several possibilities here:

Did you activate your mod in Data Files? (I've released 2 mods so far plus downloaded tons of others and I still forget to do that sometimes )

Do you have the latest Official patch?

Are you using the latest version of the CS?

Are you using http://cs.elderscrolls.com/constwiki/index.php/Windows_Vista

What worldspace did you put it in. Only 'Tamriel' is visible when 'outside'.

i placed it in wilderness of city anvil.

If you mean you put your farm outside of Anvil's walls while the Anvil Worldspace was loaded, that's why it's not showing up in game. You need to place it in the Tamriel Worldspace.

ok tanks

its not working i placed a house in tamriel i went there its still not there.i checked it in data files.

Is your CS and Oblivion game patched with the latest patch?

yes