Interactive tools to allow the users to perform certain on-the-fly 
analyses on their promoter(s) of interest and display the search 

Should allow users to: 
1), paste their sequences, 
2), upload sequences from local directories, 
3), key in their regular expressions for pattern search etc. 
It should also contain a link to Transfac to obtain their matrices 
for on-the-fly search etc.

The following sites might be helpful in providing some hints