Deny access for non standard browsers

        Hi squid users,

I reconfigured my Squid to deny access for non standard
browers (GetRight, Wget, Lynx, GetSmart etc ...)
Is it possible to reconfigure Squid, so that ONLY requests from
Netscape and MSIE will be allowed ?

my squid.conf:
==============
acl Standard_Browser browser Mozilla
http_access deny !Standard_Browser

This ACL couldn't help me, 'cause users still use Wget or
GetRight. Of course, they pretend their client to be Netscape or MSIE.
I mean they reconfigured their client, so that the client's header
sent to Squid contains "User-Agent: Mozilla"

So my question is: how do I configure my squid to deny access
for various download managers (GetRight, Wget, Go!Zilla, etc ...)
but squid will allow access for both Netscape and MSIE.

Thanks in advance.

Benarson Behajaina.

-- 
+---------------------------------+
+   Benarson Rodriguez Behajaina  + 
+   Unix System Administrator     + 
+   email :  benarson@swh.sk      + 
+   phone :  +421-7-5968 4921     + 
+   fax   :  +421-7-5968 5403     + 
+---------------------------------+