I have Lyte 2004 Professional installed on a Windows XP system. I need to be able to access the data from MS Access. I am unable to create a DSN since there are no Pervasive drivers available. Does Lytec or Pervasive have an ODBC driver for Pervasive SQl 8?

Actually, Pervasive.SQL V8 includes ODBC drivers by default. If Lytec is only installing the Btrieve side of things, you need to talk to them to find out why they don't send the ODBC drivers.
You can't download just the Pervasive ODBC drivers. You might be able to find third party drivers from Data Direct (formerly Intersolv/Merant) but I've not used them with V8.