Urgent assistance needed! Error after moving website!

[fingolfin1975]

Hello everyone,
I need urgent support on a problem I have had after moving my client's website built upon agent theme on the new web hosting service.

Everything seems to work fine after migration of all the files and settings of the db except for a thing!

When I try to upload an image from the "media" button, it starts to upload and then I get this error which I'll try to translate from Italian.

"Dir creation impossible /web/htdocs/www.c-75.net/home/wptest/wp-content/uploads/2009/06. Please verify that the root dir is writable on the server"

www.c-75.net was my old test website while now it should be www.larosaimmobiliare.com.

Where can i find the way to change the destination!?!

Please help me cause the deadline for this thing is on Monday and I really have no idea how to work it out!

Thank you in advance!
Claudio