I have the folowwing code that works awesome. But I need to be able to 
filter out the accounts that are disabled. Any ideas on how I might do 
this?

public DataSet FindUsers(string sFilter, string[] columns, string path, 
bool useCached)
{
    // try to retrieve from cache first
    HttpContext context = HttpContext.Current;
    DataSet userDS = (DataSet)context.Cache[sFilter];
    if((userDS == null) || (!useCached))
    {
        // setup the searching entries
	DirectoryEntry deParent = new DirectoryEntry(path);
        deParent.Username = ConfigurationSettings.AppSettings
["adEDir.Username"];
        deParent.Password = ConfigurationSettings.AppSettings
["adEDir.Password"];
				deParent.AuthenticationType = 
AuthenticationTypes.Secure;			

				DirectorySearcher ds = new 
DirectorySearcher(deParent, sFilter, columns);
				ds.PageSize = 1000;
				ds.Sort = new SortOption("displayName", 
SortDirection.Ascending);
				

				using(deParent)
				{
					// setup the dataset that store 
the results
					userDS = new DataSet("userDS");
					DataTable dt = userDS.Tables.Add
("users");
					DataRow dr;

					// add each paramater as columns
					foreach (string prop in columns)
					{
						dt.Columns.Add(prop, 
typeof(string));
					}

					foreach (SearchResult sr in 
ds.FindAll())
					{
						dr = dt.NewRow();	
					
						foreach (string prop in 
columns)
						{
							if 
(sr.Properties.Contains(prop)) 
							{
								dr[prop] 
= sr.Properties[prop][0];
								
							}
						}
						dt.Rows.Add(dr);
					}
				}
				// Cache it for later, with 3 minute 
sliding window			
				context.Cache.Insert(sFilter, userDS, 
null, DateTime.MaxValue, TimeSpan.FromSeconds(180));
			}
		return userDS;
	}