amira1344, your attachment shows the problem. In DB2 V8.2 and earlier on Windows, the backup has to be in a very specific set of folders. It is composed of:
DatabaseAlias.Type\InstanceName\NodeNumber\Catalog NodeNumber\yyyymmdd
with the actual backup being: hhmmss.001
Your backup is just in folder
Backups\20100223
You need to create a folder structure like (You will have to supply the Database Alias and Instance name):
DatabaseAlias.0\InstanceName\NODE0000\CATN0000\201 00223
and put your backup, 010004.001 in the last folder.
NOTE 0 is for a Full backup and the NODE0000 and CATN0000 are the normal names for non-partitioned databases.
After this, the DB2 Restore should be able to find it.