[HMBeaty]

Basically, to do like how I did it in mine in the link above, go to your AdminCP > User Profile Fields > Add New User Profile Field with the following:

Profile Field Type: Single-Line Text Box
Title: Myspace ID
Description: Enter your Myspace Profile ID if you have one
Field Required: No
Field Editable by User: Yes
Private Field: No
Field Searchable on Members List: No
Show on Members List: No

Then go to AdminCP > Styles & Templates > Style Manager > Edit Templates > memberinfo_block_contactinfo:

Find:

<dd><a href="$prepared[profileurl]">$prepared[profileurl]</a></dd>

Underneath, add:

<!-- Start U.S. Military Life Customization -->
    <if condition="$userinfo['fieldx']">
    <dt class="shade">Myspace</dt>
        <dd><a href="http://www.myspace.com/$userinfo[fieldx]">$userinfo[fieldx]</a></dd>
        <else />
    <dt class="shade">Myspace</dt>
        <dd>$userinfo[musername] has not entered their MySpace Friend ID</dd>
    </if>
<!-- End U.S. Military Life Customization -->

And change x to your profile field number