under Command Prompt,type
L:\windows\Microsoft.Net\Framework\v1.1.4322>aspnet_regiis.exe -i
after press enter key,the message of 'asp.net(1.1.4322) installation finished' will be seen.
If Microsoft.Net is installed with cd of visual studio.net 2003 first.
Reference to <Guide to asp.net dev env configuration based on windowXP sps>/csdn开发高手04/09
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