right click your start button and click explore then navigate to your 'all programs folder' delete any folders left behind here by the software you wish to remove. next make a system restore point to be safe or back up your registry as follows.
click 'start/run' and type 'regedit' then click ok then click on 'my computer' (top left) and click 'file/export' and save the back up somewhere handy like your desktop you can then boot into safe mode and click on this to restore if things go wrong.
back to the registry again click 'HKEY_Local_Machine\Software\Microsoft\Windows\CurrentVersion\Uninstall' and click on the '+' to expand it. delete any entries here for works suite or others that fail to uninstall via add remove. be careful only to delete those entries that are causing the problem.
restart your computer and it should be gone from add remove programs now.