intel iwl3945 no longer works with 2.6.27-7-generic x86_64

When I ran the Ubuntu Itrepid Ibex Live beta CD, my intel iwl3945 card worked fine. However, after I installed it and did an upgrade to kernel 2.6.27-7-generic x86_64, the card no longer works. When I check lsmod, the kernel modules show up:

iwl3945 112116 0
rfkill 19236 2 iwl3945
mac80211 253440 1 iwl3945
led_class 13192 1 iwl3945
cfg80211 37136 2 iwl3945,mac80211

However, when I do dmesg, this is what shows up:

[ 26.626080] iwl3945 0000:0c:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 26.626265] iwl3945 0000:0c:00.0: restoring config space at offset 0x1 (was 0x100102, writing 0x100106)
[ 26.626574] firmware: requesting iwlwifi-3945-1.ucode
[ 26.965090] iwl3945: iwlwifi-3945-1.ucode firmware file req failed: Reason -2
[ 26.965097] iwl3945: Could not read microcode: -2
[ 26.965215] iwl3945 0000:0c:00.0: PCI INT A disabled
[ 26.978864] iwl3945 0000:0c:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 26.979013] iwl3945 0000:0c:00.0: restoring config space at offset 0x1 (was 0x100102, writing 0x100106)
[ 26.979275] firmware: requesting iwlwifi-3945-1.ucode
[ 26.980776] iwl3945: iwlwifi-3945-1.ucode firmware file req failed: Reason -2
[ 26.980779] iwl3945: Could not read microcode: -2
[ 26.980887] iwl3945 0000:0c:00.0: PCI INT A disabled

At this point, I can not use my wireless card because there doesn't seem to be microcode for it that the new kernel can see.