Wget-Forbidden error

Hi ,

I am using shell script to connect to a https site and download all the files in a directory.

eg:
wget --no-check-certificate -r -np --user=<username> --password=<passwd> -O temp.txt https:<website>/<dirname>

Error :
HTTP request sent, awaiting response... 403 Forbidden
07:40:20 ERROR 403: Forbidden.

my requirement is to connect to the website and get few files in a dir.The filenames contain timestamp.so, i retrieve all the filenames from the website and get the list of filenames i want and use them with Wget to retrieve the files. I am doing all these as WGEt doesnt support wild card characters.

Any help is appreciated ..

ManyThanks,
Mohan