Problem with string XXX

Hi there I have a problem with string and I need help.

Example I have 5 strings :

<tr class="alitem"><td>1</td><td>03192</td><td>24/11/2011 09:32:12</td><td>This person is not here anymore</td></tr>

<tr class="alitem"><td>2</td><td>03224</td><td>24/11/2011 09:32:12</td><td>This person is not here anymore</td></tr>

<tr class="alitem"><td>3</td><td>[b]03355[/b]</td><td>[b]24/11/2011 09:32:12[/b]</td><td>[b]This person is here now[/b]</td></tr>

<tr class="alitem"><td>4</td><td>02234</td><td>24/11/2011 09:32:12</td><td>This person is not here anymore</td></tr>

<tr class="alitem"><td>3</td><td>[b]03355[/b]</td><td>[b]24/11/2011 09:32:12[/b]</td><td>[b]This person is here now[/b]</td></tr>

I only want find string "<tr class="alitem"><td>3</td><td>03355</td><td>xxxxxxxxxxxxxxxxxxx</td><td>This person is here now</td></tr>"

xxxxxxxxxxxxxxxxxxx : can be anything.  

I dont know how to do this @_@  help me.

$Texts = _IEBodyReadText ($oIEXX)

If StringInStr ($Texts,"I only want find string "<tr class="alitem"><td>3</td><td>[b]03355[/b]</td><td>" & [b]xxxxxxxxxxxxxxxxxxx & [/b]</td><td>[b]This person is here now[/b]</td></tr>[b] [/b])

Msgbox (48, "Notice","BUZZ!" ,3)

Endif