I may of course be wrong, but I don't think its Altavista thats making up the 404 error. 404 means that the link can't find your page when it looks for it, so its probably a typo on your part, either in the html or in the filename of the page on your web server. Check that the filename your page is referring to eg. href="../file.htm" is exactly the same as the file you have in that directory. (Check also that you have the file in the same directory that the html code is pointing to.)
