VB6 and VB.NET    (MCP for passing VB6 Workstation Apps test)
JET and SQL Server 2K
DAO / ADO / ADO.NET / SQL-DMO /
CSLA

I've been a strong proponent of O-O Analysis/Design/Prgmg since I was using Class(y) with Clipper twelve years ago.

Accounting/Payroll/
NonProfit/Govermental Accounting
some PPO (Insurance Administration)

I'm a CPA and my grounding is on the domain expertise side, although I have built some fairly nice applications.  I was a project lead during the design phase of a large and complex fund accounting system at my last employer.  

I'm fairly experienced with TrueDBGrid in Storage mode if you have that need.  Virtually everyone has used the other modes, I suspect.

Favorite development book: Code Complete by Steve McConnell.

MCP by virtue of passing 70-176 exam (VB Desktop Apps)