Bt Home Hub 3, signal booster?

[MHeadling]

Hi Guys, I have moved to a larger house and I cant get wireless signal in all the rooms in my house.

I have a BT Home Hub 3 in my office and this cant be moved so looking to boost the signal.

I have had a google but there is so much info! and Im a bit lost with it all! lol

Have any of you guys used any good products to help the signal, sorry Im not that up on computer stuff!

Any recommendations/links would be much appreciated!