you can use one software 'Hide IP' (search it).
I use it when i download stuff from portals like Megaupload or rapidshare.
Megaupload says that ur country(india) has cross the limit for maximum downloads, come again.
and rapidshare restrict download after some download size.
This software changes my IP address which also changes my country for portals. This is called proxy changing.
But this creates problem when I see non-english characters on website according to country set by Hide Ip.