Here are some notes on how I got the Dell TrueMobile 1350 802.11b/g
wireless card going on my dell inspiron 9200 laptop using ndiswrapper
on Linux

Details:
Dell Inspiron 9200
Fedora core 3
linux kernel: 2.6.10-1.770_FC3
ndiswrapper-1.1-1

1. download ndiswrapper tarball from
http://ndiswrapper.sourceforge.net/
2. uncompress it with tar -xvzf ndiswrapper-1.1-1.tar.gz
3. cd ndiswrapper-1.1/
4. make distclean
5. make
6. make rpm

this will create 3 rpms:
/usr/src/redhat/RPMS/i386/ndiswrapper-debuginfo-1.1-1.i386.rpm
/usr/src/redhat/RPMS/i386/kernel-module-ndiswrapper-2.6.10-1.770_FC3-1.1-1.i386.rpm
/usr/src/redhat/RPMS/i386/ndiswrapper-1.1-1.i386.rpm

7. install these with
rpm -Uvh /usr/src/redhat/RPMS/i386/*ndiswrapper*

8. get the R81433.EXE driver from
http://ftp.us.dell.com/network/R81433.EXE

9. mkdir /usr/local/src/truemobile_1350
10. mv R81433.EXE /usr/local/src/truemobile_1350/
11. cd /usr/local/src/truemobile_1350
12. unzip R81433.EXE

this will extract a bunch of stuff.

13. cd AR/
14. ndiswrapper -i bcmw15a.inf

that should successfully install the driver. You can verify this with
ndiswrapper -l

you should see something like
[root@localhost ~]# ndiswrapper -l
Installed ndis drivers:
bcmwl5a driver present, hardware present

15. ndiswrapper -m

will configure it to load this kernel module at boot.

after this, I set up an /etc/sysconfig/network-scripts/ifcfg-wlan0
containing the following

DEVICE=wlan0
BOOTPROTO=dhcp
ONBOOT=yes
TYPE=Wireless
ESSID=any

you can then either reboot, or try

modprobe ndiswrapper
ifup wlan0

worked for me. Hope this helps

-Derek