Online can be down to the 10G32 bit has two versions 551M and 624M (around), the first version of the majority, when the installation of the title error when it must be installed is the first version, at this time to be decisive unloading load second version
After uninstalling do not worry about unloading dirty, re-install prompts SID repeatedly replace the data name, prompting directory non-empty replacement directory for the root directory/oracle.
After reloading there may be a service program that is not installed (Tnslsnr.exe) service named Oracleoradb10g_home1tnslistener
Do not attempt to copy Tnslsnr.exe to the appropriate directory at this time, and to reinstall, the second line of problems will be resolved in the same way
After the installation is complete, the service Oracleoradb10g_home1tnslistener is started.
Second version of 10g
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Installing 32-bit oracle10g tips for Oracle Permission denied solutions