For those people who have trouble installing drivers from creative. Try this

File Name : PID_W7PCAPP_US_2_11_01.exe

This update resolves the hardware/device detection issue for Creative Sound Blaster® X-Fi™ and X-Fi Titanium series of audio devices in Microsoft® Windows® 7. For more details, read the rest of this web release note.

This download supports the following audio devices only:
Sound Blaster X-Fi Titanium Fatal1ty® Champion Series
Sound Blaster X-Fi Titanium Fatal1ty Professional Series
Sound Blaster X-Fi Titanium Professional Audio
Sound Blaster X-Fi Titanium
Sound Blaster X-Fi XtremeGamer Fatal1ty Professional Series
Sound Blaster X-Fi Platinum Fatal1ty Champion Series
Sound Blaster X-Fi XtremeMusic
Sound Blaster X-Fi XtremeGamer
Sound Blaster X-Fi Platinum
Sound Blaster X-Fi Fatal1ty
Sound Blaster X-Fi Elite Pro
Sound Blaster X-Fi

Fixes:
Resolves the hardware/device detection issue in Creative Software AutoUpdate running on Windows 7.

Requirements:
Microsoft Windows 7 64-bit, Windows 7 32-bit
Sound Blaster X-Fi and X-Fi Titanium series of audio devices listed above

Notes:
To install this driver
Download the file onto your local hard disk.
Double-click the downloaded file.
Follow the instructions on the screen.
Application

This works on PCI XFI also even though page on Titanium card.
Creative Wereldwijde Ondersteuning