How do I upload a network hierarhcy into SAP BW?

Question

I am trying to import a large network hierarchy with "link nodes" into SAP BW.
I'm new to SAP, and BW 7.0 is all I know. However, apparently, you can't use the new 7.0 concepts and methods to import hierarchies. You must use older 3.5 methods, including a 3.5 InfoSource.
I found some instructions at http://help.sap.com/saphelp_nw70/helpdata/en/fa/e92637c2cbf357e10000009b38f936/frameset.htm
Which documents how do import hierarchies using 3.5 mechanisms in version 7.0.
Unfortunately, I am unable to follow these steps. I create the 3.5 InfoSource, and the docs say:
"Choose InfoSource Tree ® Your Application Component ® Your InfoSource ® Assign Source System."
However, I see no option to "Assign Source System" anywhere. Also, when I create the 3.5 InfoSource, I see the target InfoObject show up in the InfoSources tree, but I don't see a InfoSource object show up in the InfoSources tree. I'm not sure what to do.
Message was edited by: Giesen
Completely revised post.

Answer 1

Krzys,
Thank you so much. I was trying to use a DB Connect Source System. I created a new flat file Source System and with that, I make it past step 4.
On step 5, I get asked about three different data sources. I choose "no" to the attributes and text data sources (those are import through BW 7.0 mechanisms) and "yes" to the hierarchy data source.
On Step 6, I am on the InfoSource change screen and I try to activate. I don't know what all the settings on the InfoSource mean. When I click activate, I get this error:
"InfoObj. 0GN_IOBJNM from fld IOBJNM of dataSource CSTOB_CBO_HIER is not active but BCT ex. -> Dtl Message no. RSAOLTP236"
I attempt to follow this help text and do: "RSA1" -> "Goto" -> "BI Content"
From there I see a panel, "InfoProviders by InfoAreas". There is a large tree underneath. I do a "find" for 0GN_OBJNM but nothing comes back. I don't know how to proceed.
I also do a Google for 0GN_OBJNM. I found the Best Practices Article BS1 which mentions activating the 0GN_OBJNM object. I try to follow step 3.3.2, however at step 2.c, I get a running stopwatch cursor that lasts for several hours. I assume it's hung. CPU+Disc on SAP server are idle.
Swapna,
I tried to follow the PDF file that you linked. However, I can't do transaction SE38 since I can't get a developer code. The following steps seem similar to Krzys's suggestion where I'm getting the issues above.