Ghost installation has problem with drivers

After installing a removable external hard drive, I ran Ghost 10.0 and had the following message displayed:

 

The following devices do not have drivers in the Symantec Recovery Disk.

Symantec Network Security Miniport

Symantec Network Security Miniport

 

 

A detailed information about these devices is given below

Class  : Net

Class Guid : {4D36E972-E325-11CE-BFC1-08002BE10318}

Description : Symantec Network Security Miniport

Hardware Id : symc_SymIMmp

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Class  : Net

Class Guid : {4D36E972-E325-11CE-BFC1-08002BE10318}

Description : Symantec Network Security Miniport

Hardware Id : symc_SymIMmp

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So--what does this mean? What do I need to do?

Thanks in advance.