I'm trying to create a new module, but I have many doubts about how to start. I have a user control that connects to the database and save your connection string in Web.config.
Also use stylesheets and skins stored in the folder App_Themes. My question is how to integrate this user control in mojoPortal; I have understood that I can create a new module, but the article http://www.mojoportal.com/addingfeatures.aspx not clear to me, could someone please help me?

Thank vincek. I created the module, but to create my user control I have the following problem. The user control has two DropDownList, each linked to their respective SQLDataSource to choose a country which shows their respective cities, this user control now works perfectly in a project but when integrated into a mojoportal module i have problems because the page loads and displays the countries, but when I choose one of the items do not carry the cities, but added the same countries and if they spike again in another country recently loaded cities but again the same problem I doubled countries by selecting the items, please let me know I'm doing wrong but I reiterate that this user control works correctly on another project.

I leave the code so that you take a look:

        protected void ddlCountry_SelectedIndexChanged(object sender, EventArgs e)
        {
            ddlUTP.Items.Clear();
            ddlUTP.Items.Insert(0, new ListItem("[Select]", "0"));
        }

        protected void ddlCity_SelectedIndexChanged(object sender, EventArgs e)
        {
            UTPID = Convert.ToInt32(ddlUTP.SelectedValue);
        }