You can use Destinator compatible maps with free PC based programs such as Freedrive and mapmonkey. Also paid CarPC front end software such as Centrafuse support Destinator maps.
Since satguide maps are Destinator compatible maps, you can use them with these programs mentioned above.
Also, have a look at mgmaps.
Mobile GMaps :: View topic - Mgmaps on Windows XP?
While mgmaps does not support driving directions yet, you can create an offline cache of maps (Google or Yahoo or both) and track your location.
For GPS receiver, I suggest you go for the satguide offer of GPS Blue Tooth Receiver with SatGuide + 1 City Map + All India Map - all for Rs 6000.
(
http://www.satguide.in/Cart/NewCart.aspx?pid=36). This is the best deal in India so far for a GPS receiver.