Hello,
when i'm trying to install fusefs-ntfs on my freebsd 6.0 i have a problem installing fusefs-libs-2.7.4 (from ports and from package)

From ports:
===> fusefs-ntfs-2009.4.4 depends on package: fusefs-libs>=2.7.2 - not found
===> Verifying install for fusefs-libs>=2.7.2 in /usr/ports/sysutils/fusefs-libs
===> Patching for fusefs-libs-2.7.4

-e 's,-lpthread,-pthread,' -e 's,-D_FILE_OFFSET_BITS=64,-D_FILE_OFFSET_BITS=64 ,' /usr/ports/sysutils/fusefs-libs/work/fuse-2.7.4/fuse.pc.in
-e: not found
*** Error code 127

From package:
# pkg_add fusefs-ntfs-2009.4.4.tbz
pkg_add: could not find package pkg-config-0.23_1 !
pkg_add: could not find package libublio-20070103 !
pkg_add: could not find package pkg-config-0.23_1 !
pkg_add: autoload of dependency '/home/ttt/fusefs-libs-2.7.4.tbz' failed!

# pkg_add -n fusefs-libs-2.7.4.tbz
Requested space: 429868 bytes, free space: 4847835136 bytes in /var/tmp/instmp.c2FPL3
pkg_add: package bsdpan-Compress-Raw-Zlib-2.003 has no origin recorded
pkg_add: package bsdpan-Compress-Zlib-2.003 has no origin recorded
pkg_add: package bsdpan-HTML-Parser-3.56 has no origin recorded
pkg_add: package bsdpan-HTML-Tagset-3.10 has no origin recorded
pkg_add: package bsdpan-IO-Compress-Base-2.003 has no origin recorded
pkg_add: package bsdpan-IO-Compress-Zlib-2.003 has no origin recorded
pkg_add: package bsdpan-URI-1.35 has no origin recorded
pkg_add: package bsdpan-libwww-perl-5.805 has no origin recorded
Package 'fusefs-libs-2.7.4' depends on 'pkg-config-0.23_1' with 'devel/pkg-config' origin.
pkg_add: package bsdpan-Compress-Raw-Zlib-2.003 has no origin recorded
pkg_add: package bsdpan-Compress-Zlib-2.003 has no origin recorded
pkg_add: package bsdpan-HTML-Parser-3.56 has no origin recorded
pkg_add: package bsdpan-HTML-Tagset-3.10 has no origin recorded
pkg_add: package bsdpan-IO-Compress-Base-2.003 has no origin recorded
pkg_add: package bsdpan-IO-Compress-Zlib-2.003 has no origin recorded
pkg_add: package bsdpan-URI-1.35 has no origin recorded
pkg_add: package bsdpan-libwww-perl-5.805 has no origin recorded
and was not found.
Package 'fusefs-libs-2.7.4' depends on 'libiconv-1.13.1' with 'converters/libiconv' origin.
pkg_add: package bsdpan-Compress-Raw-Zlib-2.003 has no origin recorded
pkg_add: package bsdpan-Compress-Zlib-2.003 has no origin recorded
pkg_add: package bsdpan-HTML-Parser-3.56 has no origin recorded
pkg_add: package bsdpan-HTML-Tagset-3.10 has no origin recorded
pkg_add: package bsdpan-IO-Compress-Base-2.003 has no origin recorded
pkg_add: package bsdpan-IO-Compress-Zlib-2.003 has no origin recorded
pkg_add: package bsdpan-URI-1.35 has no origin recorded
pkg_add: package bsdpan-libwww-perl-5.805 has no origin recorded
- already installed.
pkg_add: 1 package addition(s) failed

Could you please help me?

Why do you use a quite old FreeBSD version? Try switch to 6.4 or 7.2.