Hi Ben.  Can you give us a little more detail as to how your code doesn't work?  Do you have an error or something that occurs?

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Will Strohl
Media Module Team Lead, User Groups Team Lead
Sales Engineer, DotNetNuke Corporation

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Here is another way.... How I use:
I use the Membership provider (ASP.NET) .. the sqlmembershipprovider is already in your web.config by default.. You can use that way too...

//creatuser
//SqlMembershipProvider is a provider in your web.config which also refers to your connectionstring (database)...
MembershipProviderCollection provider = new MembershipProviderCollection();
provider = Membership.Providers;
MembershipProvider msp = provider["SqlMembershipProvider"];
password = CreateRandomPassword(6);
MembershipCreateStatus f;
MembershipUser msu= msp.CreateUser(newUsername, password, email, null, null, true, null, out f);

//random password
public static string CreateRandomPassword(int PasswordLength)
{
String _allowedChars = "abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ23456789";
Byte[] randomBytes = new Byte[PasswordLength];
RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
rng.GetBytes(randomBytes);
char[] chars = new char[PasswordLength];
int allowedCharCount = _allowedChars.Length;
for (int i = 0; i < PasswordLength; i++)
{
    chars[i] = _allowedChars[(int)randomBytes[i] % allowedCharCount];
}
return new string(chars);
}

//some more code... udpate the status... (disable/enable status of the user)
MembershipProviderCollection provider = new MembershipProviderCollection();
provider = Membership.Providers;
MembershipProvider y = provider["SqlMembershipProvider"];
MembershipUser user = Membership.Providers["SqlMembershipProvider"].GetUser(username, false);
if (user.IsApproved != status)
{
user.IsApproved = status;
Membership.UpdateUser(user);
}


cheers,

mesut