VB to Python migration

[Josh]

We have a program written in VB6 (over 100,000 lines of code and 230 UI 
screens) that we want to get out of VB and into a better language. The 
program is over 10 years old and has already been ported from VB3 to 
VB6, a job which took over two years. We would like to port it to 
Python, but we need to continue to offer upgrades and fixes to the 
current VB6 version. Does anybody know of ways we could go about 
rewriting this, one screen at a time, in Python, and calling the screens 
from the existing program?

We are also looking for a graphics toolkit to use. IronPython with it's 
.NET bindings and ability to integrate with Visual Studio looks good, 
but leaves that bad MS taste in the mouth.

We currently use a MS Access back end and need to migrate to a proper 
SQL server. We need to leave options open for SQL Server (for customers 
who want to use existing infrastructure) and something like MySQL or 
PostgreSQL. But in the mean time, we need to be able to access an 
MSAccess (Jet) database from Python.

Any answers/suggestions/pointers are greatly appreciated.

Thanks,

Josh Isted