What not to remove for Nokia PC Suite 22.214.171.124? in nLite Posted July 20, 2009 · Edited July 20, 2009 by ceztko Hello,I was having the same problem (the invalid INF section), and I believe I have solved the mystery - well at least it worked for me I basically expanded the mdmcpq.inf file from my unmodified XP CD, and put it in the INF subdir of my XP installation, and ta-da! The driver got finally installed.Confirmed! It works. I had to add the "usbser.sys" driver. Summarizing, 2 files are needed: mdmcpq.inf (put it in \windows\inf) and usbser.sys (put it in \windows\system32\drivers). I think nlite function to leave files on the resulting media should work. Thanks Slurpymeister.