Solved: Using HTTP Get with XML web services

I'm using the following in a button click:

NSString *queryString =
[NSString stringWithFormat:@"http://agraws.agraind.com/AMSInfo.asmx/ValidateUserID?input=%@", userID.text];
NSURL *url = [NSURL URLWithString:queryString];
NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url];
[req addValue:@"text/xml; charset=utf-8"
forHTTPHeaderField:@"Content-Type"];
[req addValue:0 forHTTPHeaderField:@"Content-Length"];
[req setHTTPMethod:@"GET"];

conn = [[NSURLConnection alloc] initWithRequest:req delegate:self];
if (conn) {
[activityIndicator startAnimating];
webData = [[NSMutableData data] retain];
}

But when I write to the log in the connectiondidfinishloading method I recieve the following HTTP error:
<head>
<title>Request format is unrecognized for URL unexpectedly ending in '/ValidateUserID'.</title>
<style>
body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;}
p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px}
b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px}
H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red }
H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon }
pre {font-family:"Lucida Console";font-size: .9em}
.marker {font-weight: bold; color: black;text-decoration: none;}
.version {color: gray;}....

Any help would be great.