Question:

Can Win2PDF create PDF/A files for long term archiving (ISO 19005-1).

Answer:
Win2PDF 7 supports the PDF/A file format along with other new formats.  You can select PDF/A from the Win2PDF File Save window under the "Save as Type" menu option.  The "Save As Type" setting is shown in the following image:

More details of Win2PDF 7 and pricing information can be found at : http://www.win2pdf.com/support/updates.htm