how to restore network settings from full backup

help!!!!!!!!!!!! on my personal network using network magic i can access my shared folders on my laptop from my desktop but not vice versa. my question is,,,can i restore my network settings from a full backup and where would i look in the backup. im using vista on the problem pc and xp on the desktop. if anyone knows the answer please reply a.s.a.p.,,,also is there a better program on the market for networking pc's than network magic