Newbe to Irules and I need Help Urgently

TCL is pretty specific about where you put curly braces and the else statement. I think what the issue is is the two sets of statements (snat and pool) between the "if" and "else". Also, A URL is the form of "protocol:[HTTP::host][HTTP::uri]" so you should leave out the ws.digiticalrecordcenter.com out of the comparison. Also, I prefer to use a switch statement as it's a little better performing than an if.

Give this a shot:

when HTTP_REQUEST { 
   switch [string tolower [HTTP::uri] { 
     "/crossdomain.xml" { 
       snat 10.195.3.162 
       pool POOL_WS.DRC.COM_EN 
     } 
     default { 
       HTTP::redirect https://[getfield [HTTP::host] ":" 1][HTTP::uri] 
     } 
   } 
 }

Another bonus with switch, is that you can use "glob" based wildcards which are faster than regular expressions. So, if you wanted to match based on a pattern you could do something like this:

when HTTP_REQUEST { 
   switch -glob [string tolower [HTTP::uri] { 
     "/*.xml" { 
       snat 10.195.3.162 
       pool POOL_WS.DRC.COM_EN 
     } 
     default { 
       HTTP::redirect https://[getfield [HTTP::host] ":" 1][HTTP::uri] 
     } 
   } 
 }

If you want to go the "if" route, it would look like this.

when HTTP_REQUEST { 
   if { [string tolower [HTTP::uri] equals "/crossdomain.xml" } { 
     snat 10.195.3.162 
     pool POOL_WS.DRC.COM_EN 
   } else { 
     HTTP::redirect https://[getfield [HTTP::host] ":" 1][HTTP::uri] 
   }    
 }

One more thing. You didn't mention in your requirements that you needed to snat the connection. What's the reason for including the "snat 10.195.3.162" statement? If a snat is not needed, you might want to leave that one out.

Hope this helps...

-Joe