Yes you can do it, all you need is a sim copier and a 256k or 512k balnk sim, you can buy both of them from pettah, anyway you cant use both of the sims at same time. only one sim can be registered with the network at any given time..
can copy if its isnt sim2.0
sim 2.0 's in sl at the moment are tigo and hutch sims only
dialog and mobitel are sim 1 versions so all u need is the imsi and ki exracted from the sim card thats all..
and there is no difference on hspa sim and gsm sim both are the same..