There will be a PHP Script and a TXT File lets say, i have domains.php and domains.txt i will put some domain names into the txt file and domains.php will check each domain in it if they are available, and when one is available, it will send an e-mail to my address. i will set a cron for it can anyone make that kind of script? ,ts easy but i cant make it. how much do u ask for it?
What do you mean by the term availability? Whether the site is domain is available for registering ? Or whether the site is up or not? It is a simple script, won't cost you much.
Probably not difficult but I'm unsure how useful it would be. If it is a domain you want then it would be best to assume other people want it as well. There are services available which handle this sort of thing and they'll snap them up long before you get the chance.