Configure Customer Error Pages Using the URL for asp page

[merohosting]

can any one help me in managing the custom error pages..
i have created a site that works depending upon the custom error generated in the website..

NOTE: the website is completely prepared in ASP and MS Sql Server 2000

initially it was in the HOsting controller (Control Panel).. it was working.. then i switch the server. and the new server is using PLESK.

when i use the html file to redirect the error page to the asp page. it generates error.. ..

Initially i use my own "404.asp" and wrote the code to catch the error..

so please can any one tell me the steps to solve this error...


please.. help me as soon as possible..