Some of these are pretty ambiguous to me.
SQL Server Name - Is this the computer name of the server or the name of the instance?
Number Of Instances - This would always be one from t-sql (if it is even possible). From the windows side this would be really tricky
Number of Databases and size - not sure what you mean by size. Is that data? Data and log files? etc.
Service account details - What service? There are several service accounts that can be used with sql server.
RAM - Is this the total on the machine, the total amount allowed for sql server or the current amount being used?
CPU - I assume you mean processors? Again, is the total on the machine, the number available to sql or the setting for parallelism?
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