A DOS Question! (about Aspnet_regsql.exe With Paramaters)

I need to setup some asp security databases and I have seen several sets of instructions. Some say "Navigate to C:WINDOWSMicrosoft.NETFrameworkv2.0.50727" and some say at the "asp command box". I do know that the directory & file exists on my machine. I have run aspnet_regsql.exe to configure my local server. I now need to run it to configure my web host SQL Server 2005 and that requires some paramaters like "aspnet_regsql.exe -S [DB Server Name] -U [DB login] -P [Password] -A all -d [Database name]". I am old and started before windows. I know DOS. But obviously not well enough.

How do you "Navigate to C:WINDOWSMicrosoft.NETFrameworkv2.0.50727"?

If I say "CDWINDOWS", it works.

When I am at the "C:WINDOWS>" prompt and say "CD Microsoft.NET" it says "invalid directory"

When I am at the "C:>" prompt and say "CDWINDOWSMicrosoft.NET" it says "invalid directory"

When I am at the "C:>" prompt and say "CDWINDOWSMicros~1" it says "invalid directory"

Thanks for your help. John Brown