Miserabile, it is not to be. We cannot send an email with attachments from a SharePoint Designer workflow using out of the box features. This wish comes up with increasing regularity on the MSDN forums.
Autem, in SharePoint suggestu, sicut cum tot rerum, does offer us a path forward. Potest creare consuetudinem actionum which we then incorporate into our workflows. Once installed, consuetudo actio spectat et sentit sicut alia actio (e.g. Notitia collecta, Stipes nuntius, etc).
Creando more actio est magnum montem scandere, autem, for End Users. This codeplex project provides this functionality: http://www.codeplex.com/SPDActivities. Pulling that down and installing it is also beyond the skills of typical End Users. Autem, quoniam suus 'valde simplex efficio is SharePoint admin, Vnde si te invenies indigens workflow evolvere facultatem, cum hoc, Fusce ut fiat opus vestrum SharePoint.
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