i have edit it for bold/unbold (sorry for my english i'am french ) i can do it for italic and underline if you like my bold 's add-on !
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Allow users to change bold/unbold in all their posts.
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Go to User Profile Fields >> Add New User Profile Field
Choose a "Single-Line Text Box"
Title: "your text in bold ?""
Description: "write "yes" in the field if you want your text in bold" ( ex : yes )
Display Size: 11
Max length of allowed user input: 3
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In your postbit template find :
Code:
<if condition="$post['fieldx'] != '' OR $post['fieldx'] != ''">
<font style="font-family:$post[fieldx]; color:$post[fieldx];">$post[message]</font>
<else />
$post[message]
</if>
replace with :
Code:
<if condition="$post['fieldX'] != '' OR $post['fieldX'] != '' OR $post['fieldY'] != ''">
<font face="$post[fieldX]" color="$post[fieldX]"><if condition=" $post['fieldY'] == 'yes'"><b></if>$post[message]<if condition=" $post['fieldY'] == 'yes'"></b></if></font>
<else />
$post[message]
</if>
Replace the first x in the condition statement with the ID of the ?Your Font Color In Posts? profile field, and replace the second with the ?Your Font In Posts? profile field. The X in font-family will be the id for the field in which you created in the first step and the X in color will be the id for the field in which you created in the first step. Replace Y with the ID of "your text in bold?".To view the id of the field created go to the "Profile Field Manager" and find the field ID of the field you made. (This appears under the "Name" column). It should show as fieldx where x is the ID.
gio~logist say me it this modification interest you. You can post it in your hack

can i translate it for vbulletin FR ?
http://forum.vbulletin-fr.org ?