Administrative Tools lost

"I have never seen them deleted. Go to control panel and look for ""Administrative tools"".

If you cannot find them, then you can recreate shortcuts through the following (this is a complete list of all of them, not just Windows XP):

Active Directory Management admgmt.msc
ADSI Edit adsiedit.msc
Application Server appsrv.msc
Authorization Manager azman.msc
Certificates certmgr.msc
Certificate Authority certsrv.msc
Certificate Templates certtmpl.msc
Indexing Service ciadv.msc
Component Services comexp.msc
Computer Management compmgmt.msc
Default Domain Controller Security Settings dcpol.msc
Device Manager devmgmt.msc
Disk defragmenter dfrg.msc
Distributed File System dfsgui.msc
DHCP dhcpmgmt.msc
Disk Management diskmgmt.msc
DNS dnsmgmt.msc
Active Directory Domains and Trusts domain.msc
Default Domain Security Settings dompol.msc
Active Directory Users and Computers dsa.msc
Active Directory Sites and Services dssite.msc
Event Viewer eventvwr.msc
Exchange System Manager Exchange System Manager.msc
File Server Management filesvr.msc
Shared Folders fsmgmt.msc
Microsoft Fax Service Manager fxsadmin.msc
Group Policy gpedit.msc
Group Policy Management gpmc.msc
Internet Authentication Service ias.msc
Internet Information Services iis.msc
IP Address Management ipaddrmgmt.msc
Local Users and Groups lusrmgr.msc
.NET Configuration 1.1 mscorcfg.msc
Removable Storage ntmsmgr.msc
Removable Storage Operator Requests ntmsoprq.msc
Performance perfmon.msc
Enterprise PKI pkiview.msc
Public Key Management pkmgmt.msc
Routing and Remote Access rrasmgmt.msc
Remote Storage rsadmin.msc
Resultant Set of Policy rsop.msc
Active Directory Schema schmmgmt.msc
Local Security Settings secpol.msc
Services services.msc
Sidwalk sidwalk.msc
Task Scheduler tasksched.msc
Telephony tapimgmt.msc
Terminal Services Configuration/Connections tscc.msc
Remote Desktops tsmmc.msc
UDDI Services Console uddi.msc
Active Directory Users and Computers (Exchange version) users and computers.msc
WINS winsmgmt.msc
Windows Management Infrastructure (WMI) wmimgmt.msc
Printer Management printmanagement.msc
Microsoft .NET Framework 2.0 Configuration mscorcfg.msc

If you just want the Windows XP default ones, here they are (I am just including ones that are valid in administrative tools, for example, while ""Device Manager"" can be accessed on its own, it is part of ""Computer Management"", so I will not list it):

Component Services comexp.msc
Computer Management compmgmt.msc
Event Viewer eventvwr.msc
Internet Information Services iis.msc (If you have it installed)
Performance perfmon.msc
Local Security Settings secpol.msc
Services services.msc
Task Scheduler tasksched.msc
Printer Management printmanagement.msc
Microsoft .NET Framework 2.0 Configuration mscorcfg.msc

Extras:

System Configuration - %windir%\system32\msconfig.exe
Windows Memory Diagnostics (Vista + 7?) - %windir%\system32\MdSched.exe
iSCSI Initiator - %windir%\system32\iscsicpl.exe
Data Sources (ODBC) - %windir%\system32\odbcad32.exe

In addition, if they are simply not being shown, you can take a look at the Start menu properties (right click on the start menu, and click properties), then -"