Hello everyone... does any body know a movie about a family that move to a new house and every time they are outside the wife see someone in there house near the window but she doesn't find him..

Here's a movie that gets asked about a lot.

The Haunted (1991 TV movie)
Starring Sally Kirkland, Jeffrey DeMunn, Diane Baker, Cassie Yates, Joyce Van Patten
IMDb synopsis:
Supposedly based on a true story, this is the story of the Smurl family, who move into their new home on Chase Street only to find that it is plagued with three spirits and a demon. The demon wants to destroy their family, and they are constantly desperate until they find the Warren family to get rid of them.
MSN synopsis:
"The Haunted" is a Fox Network TV movie purportedly based on eyewitness testimony. The story goes that, in the mid-1980s, the Smurl family of Pittston, Pennsylvania, began noticing something askew in their four-bedroom Victorian home. Apparently there are agents of Satan at work, bedeviling the family and smashing the crockery. None of the Smurls believes in ghosts~until they have no choice.

The Haunted (TV Movie 1991) - IMDb
The Haunted (1991) - Synopsis - MSN Movies

Here's Part 1 on YouTube:
http://www.youtube.com/watch?v=lXAEJ3olMp0

This is a very wild guess since you didn't mention an approximate date or any details. If you could provide a time and perhaps other details, it would help so much.