OK, i'm not sure if this will be of use to anyone, but i couldn't find it online so emailed holux to see if they had any details and this is what i got back.
some more info Road Angel GPS Module PDF info, The Default Baud rate is 57600, but i believe this can be changed (not figured that bit out yet), also it does output standard TTL data, i managed to get it working this afternoon, and got valid data out of it using the same coding as for the paralax modem (in the arduino tutorial)!!
By default it only outputs GGA and RMC data (i want to get info on the magnetic variation as well as lat, lon), but other strings need to be requested and i'm still trying to figure that bit out.
Will keep this post updated if things develop further.