AIX

Hello dear friends, I wanrt to document our servers configuration but have no Idea which softweare should I use for documenting server environment.. maybe anyone can suggest me which software should I use.. thanks in Advance

If you mean some software with a some backend database to store system configuration , I think I have no proper answer to give.
Otherwise issue the below commands that may aid you in documenting your systems configuration and store them in some sort of spreadsheets like MS Excel for documenting purpose .
General

prtconf - list system configuration
lscfg [-v] - devices (-v = verbose for microcode levels, etc)
lscfg -v - devices verbose (microcode level, firmware, etc)
lsdev -Cc adapter - adapter cards
lsdev -Cc disk - disks
lsdev -Cc processor - CPU's
lsattr -El sys0 - serial number, model number, memory

AIX

oslevel- AIX OS level
instfix -i |grep ML - AIX maintenance level
lslpp -l - installed SW and levels

Disk and volumes

lsvg -o - active volume groups
lsvg -p vgname - disk drives in VG
lsvg -l vgname - LV's in VG
lslv lvname - LV detail
lslv -l lvname - LV disk location
lspv - disks
lspv -l hdisk# - LV's residing on a disk where # is the number of the disk

Network

lsdev -Cc if -List network interfaces
netstat -rn -List network gateways

Yes I mean some software with a some backend database to store system configuration... anyway thanks a lot :-)