Client Web Browser && Remote SQL Script Error?

Hello all,

I know that this is a long shot, but I have a problem which someone
reading this group *may* just be able to shed some light on.

We have a new internal personnel planner/attendance system in place. It
uses a web interface to allow members of staff to select their site
location for any week, request leave and record absences.

The server-side scripting is composed of VB/ASP and Javascript which
ultimately queries & writes to an MS SQL Server 2000 database via an
ODBC connection between webserver (IIS6.0).

Here is the problem and I *know* that it sounds unlikely/impossible but
we carried out exhaustive tests.

-> I open a web browser on my local PC (XP Pro SP2)
-> Login to the web-based planning system
-> Update information
-> Submit Changes

At this point I get a script error:

---error message---

Microsoft OLE DB Provider for ODBC Drivers error '80040e14'

[Microsoft][ODBC SQL Server Driver][SQL Server]Line 1: Incorrect syntax
near ')'.

/staff/wfp/Whereabouts/writeAbsence_v2_5.asp, line 108

-------------------

Which is fair enough as it probably points to a problem with the SQL
statement being passed by the .asp page.

***BUT*** I _only_ get this message when I access the page via a browser
from certain PCs!

I have tried 3 browsers: MSIE6, Firefox1.5, Opera8.5.

I have obviously ensured that it isn't any kind of browser caching issue.

I have no issues using scripted-based web pages in general from the PC
in question.

I have checked the regional settings to ensure that I am using a
standard character set.

I *can* submit database changes via web browsers from most other PCs on
our network, without incurring the error message.

Even when I get the error message, the values are written to the db and
the information is updated.

The other PCs from which I am experiencing the same difficulty are
servers running Win2000 & Win2003 respectively.

Is there any kind of OS/User Profile setting which would mean that
scripts running on a remote webserver would fall over when trying to
perform an SQL write?

Could it be some kind of character encoding issue, which means that the
parameters that are received by the .asp script and then written via the
SQL statement are mangled in any way?

I can't see that there is any kind of local setting that would influence
whether remote scripts would or would not cause an error such as this.

If anyone has any ideas, has encountered anything similar or can shed
light on a system-specific setting or feature that may cause this,
please post your thoughts.

Yours Gratefully

Guy