[RESOLVED] Posting a second value with a text input

[facarroll]

I want to be able to post a preset value as a hidden field to accompany an input text value, and have both values entered in the database record.
You can see in the code below that the form asks for names for up to six student groups, such as "Year7", "Year8", "Year9" and so on. What I want my form to do is to post the accompanying preset input name (in this case "group1", "group2", "group3", and so on) to a second column in the same record, so that I can search the records on this preset field.
I hope I've explained this OK.

                   <table width="750" align="center" cellpadding="4">
                    <form action="admin_login.php" method="post" enctype="multipart/form-data">
                      <tr>
                        <td><div align="right"><font size="-1">Student Group 1:&nbsp;&nbsp;</font><font color="#CC0000">&nbsp;</font></div></td>
                        <td><input name="group1" type="text" value="<?php echo "$group1"; ?>" /></td>
                      </tr>
                      <tr>
                        <td><div align="right"><font size="-1">Student Group 2:&nbsp;&nbsp;</font><font color="#CC0000">&nbsp;</font></div></td>
                        <td><input name="group2" type="text" value="<?php echo "$group2"; ?>" /></td>
                      </tr>
                      <tr>
                        <td><div align="right"><font size="-1">Student Group 3:&nbsp;&nbsp;</font><font color="#CC0000">&nbsp;</font></div></td>
                        <td><input name="group3" type="text" value="<?php echo "$group3"; ?>" /></td>
                      </tr>
                      <tr>
                        <td><div align="right"><font size="-1">Student Group 4:&nbsp;&nbsp;</font><font color="#CC0000">&nbsp;</font></div></td>
                        <td><input name="group4" type="text" value="<?php echo "$group4"; ?>" /></td>
                      </tr>                      

                      <tr>
                        <td><div align="right"><font size="-1">Student Group 5:&nbsp;&nbsp;</font><font color="#CC0000">&nbsp;</font></div></td>                        

                        <td><input name="group5" type="text" value="<?php echo "$group5"; ?>" /></td>                        

                      </tr>                      

                      <tr>
                        <td><div align="right"><font size="-1">Student Group 6:&nbsp;&nbsp;</font><font color="#CC0000">&nbsp;</font></div></td>                        

                        <td><input name="group6" type="text" value="<?php echo "$group6"; ?>" /></td>                        

                      </tr> 
<tr>
                        <td><div align="right"></div></td>
                        <td><input type="submit" name="Submit" value="Submit Form" /></td>
                      </tr>
                    </form>