Cookie parser help =]

[Root Core]

Well I wrote out this function for an HTTP Wrapper im making:

        public string ExtractCookies(string strHeader)
        {
            string[] SplitStr;
            string[] Temp;
            string TempVal;
            string Key;
            string Value;
            int i;
            int TempHandler;
            string strCookies;

            SplitStr = strHeader.Split("\r\n");

            for (i = 0; SplitStr.Length != 0; i++)
            {
                if (SplitStr[i].Contains("Set-Cookie"))
                {
                    Temp = SplitStr[i].Split("Set-Cookie: ");
                    Temp = Temp[1].Split("=");
                    Key = Temp[0];
                    Temp = Temp[1].Split(";");
                    Value = Temp[0];
                    if (colCookies.Contains(Key))
                    {
                        TempHandler = Convert.ToInt16(Key);
                        TempVal = colCookies.GetByIndex(TempHandler);
                        if (TempVal != Value)
                        {
                            colCookies.Remove(Key);
                            colCookies.Add(Key, Key + "=" + Value + ";");
                        }
                    }
                    else
                    {
                        colCookies.Add(Key, Key + "=" + Value + ";");
                    }
                }
            }

            strCookies = "";
            int j;

            for (j = 1; colCookies.Count != 0; j++)
            {
                strCookies = strCookies + colCookies.GetByIndex(j);
            }

            return strCookies;
        }

Im fairly new to C# would someone mind pointing out whats wrong with this coding? I get an error with every one of the split actions >_< which says

Argument '1': cannot convert from 'string' to 'char[]'

and I get this error for the split actions aswell

"The best overloaded method match for 'string.Split(params char[])' has some invalid arguments"

and I get an error in this part:

TempHandler = Convert.ToInt16(Key);
TempVal = colCookies.GetByIndex(TempHandler);

which says:

Cannot implicitly convert type 'object' to 'string'. An explicit conversion exists (are you missing a cast?)

Does anyone know what Im doing wrong with the syntax?

PS: Im using Microsoft Visual C# 2005 Express Edition