but wen i try to copy & paste something in that partition
i cant do it.
Yes obviously it would be like that only. NTFS partition wont have a Write Access to it from Linux. Only Read Access is enabled. On the other hand FAT16 and FAT32 Partitions have both Read/Write Access from Linux.
You need to install a special driver to be able to write to NTFS, but be warned: the driver has its bugs and shouldn't be used in a stability-critical environment. As for the driver, take a look at http://www.linux-ntfs.org/
yes the only reason most distributions dont include NTFS writing by default is because it is a bit buggy and if linux newbies managed to trash thier windows instillations, it would give linux a bad name with the newbies