I can not get past the start up window, will not let me into safe mode, will not let me change any thing, I know I need to copy my Csrsrv.dll back into the system. But it will not let me in at all , even when I use my XP cd.
Is the any program like the old dos that will let it install on boot up?
thanks.

Resources for Troubleshooting Startup Problems in Windows XP (support.microsoft.com/default.aspx?scid=kb;EN-US;Q308041)

Q310353: How to Perform a Clean Boot in Windows XP (support.microsoft.com/default.aspx?scid=kb;en-us;q310353)

Q316434: How to: Do Advanced Clean-Boot Troubleshooting in Windows XP (support.microsoft.com/default.aspx?scid=kb;en-us;q316434)

Q307274: Windows XP Stops Responding (Hangs) During Windows Shutdown (support.microsoft.com/default.aspx?scid=%2fsupport%2fkb%2farticles%2fq30 7%2f2%2f74.asp+)

Q314058: Description of the Windows XP Recovery Console (support.microsoft.com/default.aspx?scid=kb;en-us;q314058)

How to: Determine Which Video Driver Is Loading in Windows XP (support.microsoft.com/default.aspx?scid=kb;en-us;Q314854)

How to: Troubleshoot the Video Adapter Driver in Safe Mode in Windows XP (support.microsoft.com/default.aspx?scid=kb;en-us;Q292460)

How to: Restore the Operating System to a Previous State in Windows XP (support.microsoft.com/default.aspx?scid=kb;en-us;Q306084)

How to: Start the System Restore Tool from a Command Prompt in Windows XP (support.microsoft.com/default.aspx?scid=kb;en-us;Q304449)

Troubleshooting System Restore in Windows XP (support.microsoft.com/default.aspx?scid=kb;en-us;Q302796)

How to Turn On and Turn Off System Restore in Windows XP (support.microsoft.com/default.aspx?scid=kb;en-us;Q310405)

A Description of the Safe Mode Boot Options in Windows XP (support.microsoft.com/default.aspx?scid=kb;EN-US;Q315222)

General USB Troubleshooting in Windows XP (support.microsoft.com/default.aspx?scid=kb;en-us;Q310575)

How to Start Setup from MS-DOS in Windows XP (support.microsoft.com/default.aspx?scid=kb;en-us;307848)

How to Perform Disk Error Checking in Windows XP (support.microsoft.com/?kbid=315265)

How to use System File Checker in Windows XP (support.microsoft.com/?kbid=310747)

Repairing Damaged MBRs and Boot Sectors in x86-based Computers (www.microsoft.com/resources/documentation/Windows/XP/all/reskit/en-us/Default.asp?url=/resources/documentation/Windows/XP/all/reskit/en-us/prkd_tro_evwd.asp)

Automated System Recovery (www.microsoft.com/resources/documentation/Windows/XP/all/reskit/en-us/Default.asp?url=/resources/documentation/Windows/XP/all/reskit/en-us/prkd_tro_stos.asp)

Troubleshooting Disks and File Systems (www.microsoft.com/resources/documentation/Windows/XP/all/reskit/en-us/Default.asp?url=/resources/documentation/Windows/XP/all/reskit/en-us/prkd_tro_gwoj.asp)

Disk and Maintenance Tools (www.microsoft.com/resources/documentation/Windows/XP/all/reskit/en-us/Default.asp?url=/resources/documentation/Windows/XP/all/reskit/en-us/prmb_tol_vvcu.asp)

Disaster Recovery Tools (www.microsoft.com/resources/documentation/Windows/XP/all/reskit/en-us/Default.asp?url=/resources/documentation/Windows/XP/all/reskit/en-us/prmb_tol_jrch.asp)

System File Tools (www.microsoft.com/resources/documentation/Windows/XP/all/reskit/en-us/Default.asp?url=/resources/documentation/Windows/XP/all/reskit/en-us/prmb_tol_ainz.asp)

Solutions for Backup and Recovery (kadaitcha.cx/backup.html)

SUPPORT: Windows XP Start-up Disks (kadaitcha.cx/startup_disks.html)

Cannot Start Windows XP (kadaitcha.cx/cannot_start_xp.html)

Troubleshooting XP startup issues, Part 1 (searchwin2000.techtarget.com/originalContent/0,289142,sid1_gci968108,00.html)

Thank you , I will give all those a try one at a time.