some questions.???, do you only have a "laptop",if yes ,then the pictures must already be on the hard drive of you laptop or they would not be seen by picaso.
???? if you have another p/c,and the pictures are on there,you can just copy and paste from there to your laptop, of put them on to "usb " stick and transfer them from there to your laptop, hope this helps.
p/s, deleating picaso ( as you say) will not get rid of the pictures on ?? whatever drive they are on ok.