Can boot from pen drive Bcoz don't have cdRom

Hello,
sir i don't have cd-rom can i boot my machine from pen-drive please make it possible it is very urjent &

I HAVE ANOTHER PROBLEM WITH MY SQL-SERVER2005 DUE TO CONNECTING TO WINDOWS.
SHOWS THE MESSAGE------TITLE: Connect to Server
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Cannot connect to HOME-9BBE4B297B\SQLEXPRESS.

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ADDITIONAL INFORMATION:

An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) (Microsoft SQL Server, Error: -1)


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BUTTONS:

OK
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