No ICONS No START/TASKBAR ? ?

Hi I have a dell 5100 running windows xp home basic SP3.

To get straight to the point one day i turned on pc and no icons/taskbar etc. the prob is with explorer.exe stating: SHDOCVW.dll as the prob. I corrected this (i think??)

only now to have the same prob= no icons/taskbar etc except error message has changed to "explorer.exe (blah blah) 0xc0000022 "application failed..etc etc"

I have tried "sfc /scannow" "regcure",system restore, tryin to find the "explorer or iexplorer in windows 32 folder to delete it" etc to no avail,

please can anyone point me in the right direction? many thanks in advance! ,
yours hopefully,
Daz
p.s i dont have access to the xp os disk, and i can only get online using my laptop or usin cntrl>alt>del. on my pc

Daz
April 2009