A. Under 6.5 and earlier, run setup from the \I386 directory as if you were installing the whole of SQL Server on the client. Then just check "Install client utilities only" when asked. This will just install the client utilities, net-libs etc.
For SQL 7.0 do the same thing - just choose client stuff only. If you install from a "server" CD then Win9x and NT workstation clients will only be able to install the client stuff anyway.
This includes all the tools like SQL Enterprise Manager (which runs fine on Win9x).
If all you want are odbc etc. type drivers and no utilities then the latest version of these is in SQLREDIS.EXE which ships with SP1 for SQL 7.0. This can be run to just install the necessary dll's etc. and no utilities.