Do you mean for checking your rankings or are you looking for some magical tool to improve them, if its the former then the keyword tracker is a good bet and there are a few other useful webmaster tools here
http://www.digitalpoint.com/tools/keywords/ this tools is good. but how bout on ASP? can this work? yah, i have few tools, but i want more accurate. thanks for your reply guys
The tools are free to register and use, they are not for installation on your own site so doesn't matter what your sites are coded in.
any other tools like this? free tools capable to check my keywords positions on SE's. like prsearch.biz thanks i currently using this tools, but for google's result if i add the msn and yahoo there is tracking code needed. ???