I've been using these reg changes to make verticle scroll bar Thicker in browsing using start/programs
<wap-provisioningdoc>
<characteristic type="Registry">
<characteristic type="HKLM\Software\Microsoft\Shell\IconConfig">
<parm name="HorizontalIconSpacing" value="110" datatype="integer" />
<parm name="VerticalIconSpacing" value="115" datatype="integer" />
<parm name="IconTitleFontSize" value="6" datatype="integer" />
</characteristic>
<characteristic type="HKLM\System\GWE">
<parm name="cxVScr" value="18" datatype="integer" />
</characteristic>
</characteristic>
</wap-provisioningdoc>
back up your orig values to go back if you don't like