Thanks a lot for your help. My questions/comments
1. Using network - I am already having it, use that for moving email files. But I thought there might b something which is faster than this.
2. Sync software sounds like a good idea, will test, but any idea of time ? Or it depends ? Another problem (I already mentioned), some of the files are havin filenames thats not compatable to Win, so I am not sure whether this will work. I tried usin Acronis True Image (not full backup of HDD, that works) to copy some folders, it didn't work.
3. Pen drive or mobile hard disk (like WD passport) with USB interface - whats the difference in data transfer speed (pen drive and HDD with USB interface)?
I have 2 options thogh.
option 1 - Use pen drive or the HDD with USB interface to copy data form PC to Lappy
option 2 - Use pen drive or HDD with USB interface as a drive itself, I mean save emails and other data in that, when I travel, just connect to lappy and continue usin it, so no need to transfer data
Which option will be better ?
Sorry for bugging too much, but just curious about the best way to save time
Note : It will sound like 'solution for a lazy guy' but the thing is I am in need of a solution which will save time. I plan trips just hrs before, so I am not gettin time to move all data

thats the reason.
Just contacted local hardware dealer. Hers the price list
Samsung
Hard Disk 40 GB Notebook 2.5" Rs. 2690
Hard Disk 60 GB Notebook 2.5" Rs. 3500
Hard Disk 80 GB Notebook 2.5" Rs. 4000
Casing Rs. 300 or so (that will have USB port etc ? When I connect it will act like a 'big' pen drive rt ? And i can save all data / email in that - like a drive itself ? Also, I can install programs on that? )
Price sounds good (if that works for me LOL)