Dear Liu Die Yu, In my case (XPSP1 + IE6SP1 + all hotfixes) it doesn't work. Probably it's older bug (same thing was with \\.\Drive:\) --Wednesday, November 5, 2003, 1:31:53 PM, you wrote to bugtraq@securityfocus.com: LDY> double slash moves cache from INTERNET zone to MYCOMPUTER zone LDY> ("that's all" is the end of file if you are in a hurry) LDY> [tested] LDY> OS:WinXp LDY> Microsoft Internet Explorer v6.Sp1; up-to-date on 2003/10/30 LDY> [technical detail] LDY> copy an EXE file to your cache directory: LDY> [SysDrive]:\Documents and Settings\[user_name]\Local Settings\Temporary Internet Files\Content.IE5\EXE.EXE LDY> then try to use CODEBASE trick to execute that file (refer to http://continue.to/trie --> "codebase local path"), you'll get an error message. LDY> however set CODEBASE to: LDY> [SysDrive]:\\Documents and Settings\[user_name]\Local Settings\Temporary Internet Files\Content.IE5\EXE.EXE LDY> (double slash after [SysDrive]) LDY> EXE.EXE in cache directory will be executed. LDY> conclusion: LDY> [SysDrive]:\Documents and Settings\[user_name]\Local Settings\Temporary Internet Files\Content.IE5\ LDY> is treated in INTERNET zone. LDY> but LDY> [SysDrive]:\\Documents and Settings\[user_name]\Local Settings\Temporary Internet Files\Content.IE5\ LDY> is treated in MYCOMPUTER zone. LDY> that's all. LDY> of course, it's added to "Unpatched IE Bugs" list maintained by me. here: http://continue.to/trie LDY> [greeting] LDY> greetings to: LDY> the Pull, dror, guninski and mkill. LDY> ----- LDY> all mentioned resources can always be found at UMBRELLA.MX.TC LDY> [contact] LDY> UMBRELLA.MX.TC ==> How to contact "Liu Die Yu" -- ~/ZARAZA Пока вы во власти провидения, вам не удастся умереть раньше срока. (Твен)