You didn't give too much info.
On one of the decal threads there is a 'how to' apply the decal. There should be a paper backer and masking tape(or similar) on the front. You remove the paper and carefully place the decal w/ it still on the masking tape. You squeegee the bubbles out and then carefully remove the masking tape part. Viola.
There are you tube videos showing how that make it easier to understand.
ByteTheBullet (-: