Thanks, I was only leaving some comments after trying HFSLIP tool - I find it very useful. I tried to use nlite, but it failed to produce successfull installation cd XPSP3+IE7 (battery problem - looks like unsigned drivers settins were to blame). Then I found that nLite does more than I wanted (editing sfc.dlls) and since there is this HFSLIP tool that any reasonable user can use, STUDY and, in case of problem, FIX himself, I was delighted. FYI: when trying to install 893803 under XPSP3 message says that newer package installer version is already included. That "question" about IE7 was not really a question ;-) but only information that it was not exactly fresh XPSP3, but IE7 was extra added (so that might caused mentioned symptoms). Anyway, I will try to install really clean XPSP3, then 893803 and report it later. One question about scripting - I am new to cmd, but it looks like pretty good shell (bash is my poison), but can you tell me why HFSLIP does not use parameters when CALL-ing "shell functions" (i.e. CALL :HF %hotfix_filename%)? Some 2K/XP/2003/Vista incompatibility? cmd limitation?