-----------------------------
for 6.03.00lnxt04051300full:
hexedit hsfmodem-6.03.00lnxt04051300full/modules/imported/hsfengine-i386.O
Press ENTER, type 248cd, press ENTER, type 75, press ENTER, press Ctrl+X,
type Y, press ENTER.
for 7.18.00 or 7.18.00.03 offset is 0x2659D
------------------------------
if this do not help go other step...
(if you famular with italian you can visit
http://www.linuxhelp.it/modules.php?name=Forums&file=viewtopic&t=308&postdays=0&postorder=asc&start=60
)
---OTHER STEP---
installation instructions:
1. go to www.linuxant.com and download appropriate
*.tar.gz(e.g. hsfmodem-6.03.00lnxt04082400full.tar.gz) for your kernel
2. unpack: tar -xzf driver.tar.gz
3. copy attached patch to unpack folder
4. for HSF owners: ./hsfpatch.dat (for HCF: ./hsfpatch.dat -c)
5. after installation, as root: hcfconfig (for HCF), hsfconfig (for HSF)
6. for country, choose USA
7. for email - tux@kernel.org
8. code: BADCAFE4742B
8. set your kppp:
Sequence (init):
AT&FW3+MS=V90,1,28800,33600,28800,56000
or
AT&F&C1&D2s10=200+MS=v90,1,28800,33600,28800,56000
9. enjoy!
Works with 2.6.x
Use at own risk
get hsfpatch.dat
here we counting idiots. we have 
idiots who visit this page
