If you want to use your over the air listings on an analogue card then you could try dvb guide it is suppose to output a xmltv listing from captures, i personally haven't used it myself. then point your analogues xmltv folder to the output from the scan, obviously you need a dvb-t card for this to work.
PVR1: GBPVR 1.3.11|Pentium E5200|2GB|Hauppauge nova-t stick|nova-t usb2| tevion dvb-t100|250GB OS + 250GB HDD
PVR2: GBPVR 1.3.11|Sempron 2800+|768Mb|Geforce 5700le|Nebula pci|nova-t 909|nova-t 90002|nova-t stick| 300GB + 80 OS HDD
PVR2: GBPVR 1.3.11|Sempron 2800+|768Mb|Geforce 5700le|Nebula pci|nova-t 909|nova-t 90002|nova-t stick| 300GB + 80 OS HDD