aerial photo mosaic

[Joe Leone]

Hi,
 I have a number of aerial photographs (30 jpg files) which I want to mosaic 
together and import into GRASS. 
 Any comments on the best way to proceed would be welcomed.
 
 Thanks Joe
 
 
Joe Leone
Senior Technical Officer
Western Australian Laboratory
CSIRO  Wildlife & Ecology
LMB 4, PO MIDLAND WESTERN AUSTRALIA 6056
Phone +61 9 290 8108
Fax   +61 9 290 8134
Email  Joe.Leone at per.dwe.csiro.au