SharePoint 2010 Foundation / SQL Server Express 2008 R2 No Services

Hi,
    I wanted to try SharePoint 2010 Foundation on my Windows Server 2008 R2 box. I already had SQL Server 2008 Express R2 with Management Studio installed. I then installed SharePoint 2010 Foundation & mistakenly assumed SharePoint 2010 would use my copy of SQL Server. I now know SharePoint has installed its own copy of SQL Server as I did not selected server 'Farm'. I unistalled everything to start again including deleting SQL folders form 'Program Files' & deleting SQL Express & SharePoint registry keys. After reinstallation of SQL Server Express I no longer can connect to the SQLEXPRESS instance. Looking in SQL Server Configuration Manager I have nothing listed in the SQL Server Services branch. I dont know what I have messed up but uninstall/reinstall or trying repair has made no difference. Once I get SQL Server Express working I will try & install SharePoint to use the already installed instance of ...