Help Re Conversion please

Our devices use the GPGGA & GPRMC I need to know how to convert into MapPoint 2004 without using the GGL line anybody point me in the right direction please.
GPGGA,123040.849,5205.1070,N,00518.2252,E,1,08,1.3 ,68.1,M,,,,0000*34
GPRMC,123040.849,A,5205.1070,N,00518.2252,E,0.08,2 2.49,091104,,*35
I would like to word out a simple conversion script that will recive these 2 lines and show a postion on MapPoint.

Regards Ticker

conversion logic:
-----------------------------------
Latitude:

original format: DDMM.MMMM

Convert it to : DD + (MM.MMMM/60)
IF Hemisphere is "N" value is Positive
IF Hemisphere is "S" value is Negative

-----------------------------------
Longitude:

original format: DDDMM.MMMM

Convert it to : DDD + (MM.MMMM/60)
IF Hemisphere is "W" value is Negative
IF Hemisphere is "E" value is Positive
--------------------------------------

After the conversion you should be able to map the coordinates in Mappoint. Thanks

Excellent you have my regards.

Ticker