Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
gecko-devel
firefox2-devel

Requires :

libc.so.6()(64bit)
libplds4.so()(64bit)
firefox2 = 2.0.0.19-1.fc8.remi
libplc4.so()(64bit)
libstdc++.so.6(GLIBCXX_3.4)(64bit)
libpangocairo-1.0.so.0()(64bit)
libstdc++.so.6(CXXABI_1.3)(64bit)
libgcc_s.so.1(GCC_3.0)(64bit)
libgtk-x11-2.0.so.0()(64bit)
libgtkembedmoz.so()(64bit)
libatk-1.0.so.0()(64bit)
libdl.so.2()(64bit)
libgobject-2.0.so.0()(64bit)
libgmodule-2.0.so.0()(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.3.4)(64bit)
libX11.so.6()(64bit)
nss-devel => 3.11.1
libmozjs.so()(64bit)
libstdc++.so.6()(64bit)
nspr-devel => 4.6
libxpcom.so()(64bit)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libIDL-2.so.0()(64bit)
libpthread.so.0(GLIBC_2.2.5)(64bit)
libgdk-x11-2.0.so.0()(64bit)
libpthread.so.0()(64bit)
libnspr4.so()(64bit)
rpmlib(CompressedFileNames) <= 3.0.4-1
libcairo.so.2()(64bit)
rpmlib(VersionedDependencies) <= 3.0.3-1
libc.so.6(GLIBC_2.4)(64bit)
libgdk_pixbuf-2.0.so.0()(64bit)
libglib-2.0.so.0()(64bit)
libm.so.6()(64bit)
libc.so.6(GLIBC_2.3)(64bit)
libgcc_s.so.1()(64bit)
libxpcom_core.so()(64bit)
libpango-1.0.so.0()(64bit)

Content of RPM :
/usr/include/firefox-2.0.0.19
/usr/include/firefox-2.0.0.19/accessibility
/usr/include/firefox-2.0.0.19/accessibility/nsAccessNode.h
/usr/include/firefox-2.0.0.19/accessibility/nsAccessNodeWrap.h
/usr/include/firefox-2.0.0.19/accessibility/nsAccessibleEventData.h
/usr/include/firefox-2.0.0.19/accessibility/nsAccessibleText.h
/usr/include/firefox-2.0.0.19/accessibility/nsAccessibleWrap.h
/usr/include/firefox-2.0.0.19/accessibility/nsDocAccessibleWrap.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessNode.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibilityService.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessible.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibleAction.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibleCaret.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibleDocument.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibleEditableText.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibleEvent.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibleHyperLink.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibleHyperText.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibleProvider.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibleRetrieval.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibleSelectable.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibleTable.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibleText.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibleTreeCache.h
/usr/include/firefox-2.0.0.19/accessibility/nsIAccessibleValue.h
/usr/include/firefox-2.0.0.19/accessibility/nsPIAccessNode.h
/usr/include/firefox-2.0.0.19/accessibility/nsPIAccessible.h
/usr/include/firefox-2.0.0.19/accessibility/nsPIAccessibleDocument.h
/usr/include/firefox-2.0.0.19/accessibility/nsRootAccessible.h
/usr/include/firefox-2.0.0.19/accessibility/nsRootAccessibleWrap.h
There is 4253 files more in these RPM.