I have data in old floppy disk (RAW file system) and I need to revovery some data. May somebody help me to convert this data in my actual computer with Windows XP

There are a few utilities you can use:

GetDataBack: http://www.runtime.org/data-recovery-software.htm

BadCopyPro: http://www.jufsoft.com/badcopy/floppy_recovery.asp

Active Floppy Recovery: http://www.floppy-recovery.com/