Which better for Vista 32 bit in Greece language >> Custom Installation OR Upgrade >> To Windows 7 I

I have windows VISTA 32bit on my VAIO laptop but in Greece Language
& I have windows 7 Ultimate [English] CD want to Install it
[1] I don't know which better Custom OR Upgrade??
[2] Can Anyone plz put a link for how to install it??

plz guys I need the windows in english

& thx
wish luck for everyone ;)

This website is not affiliated, owned, or endorsed by Microsoft Corporation. It is a member of the Microsoft Partner Program.