Mide -- You said private sector. Why would a SOX auditor be bothering you? As far as I know they can only come around when you're publicly traded. I work for a privately held organization and we don't do SOX and don't have to worry about PCI-DSS since we aren't involved with credit card payments. AFAIK we don't have to worry about anything but HIPPA.
As far as SOX auditing goes, it's probably going to cost some money. I think the SCCM (formerly MOM, EDIT: Wrong, formerly SMS) from microsoft has some canned configurations you can use for SOX audits. We use a tool from Altiris (Now part of Symantec) for this type of thing. Even though we don't have to comply with it, we still strive to do so.