I won't recommend EasyGPRS if you worry about demaging you phone since EasyGPRS is for
GSM phone but A610 is
CDMA and PCLink 2000 is for Samsung
CDMA phone. I believe as long as it is PCLink 2000, it should work for your phone. If I have to try, I will try PCLink instead of EasyGPRS. The only case that you may demage your phone is when you use the wrong cable (one that is not compatible with your phone). However, I agree with you that if you have any doubt, you should play safe.
Another option that you can try is other softwares like Futuredial or Datapilot but they are not free. I saw your other post that you have tried Datapilot before and it worked once but not anymore now. Why don't you contact Datapilot and ask for their technical support. When is the last time you did virus and Adware scan? Is it possible that your computer has some problem?
I found the following link for FAQ for PCLink:
http://www.samsungtelecom.com/pclink/pclfaqs.html