The above comment, I believe, reflect Jim's experience satisfactorily opening TMG RTF report files in OOo 1.1.4.
I have an somewhat suspect OOo 1.1.2 installation, but do not intend to download a later version at dialup speeds at this time. Those who do download the relatively stable OOo 1.1.4 version (2.0 beta is available) may be cautioned to save and open their report files several times in OOo to see if the save/open operation causes any immediate errors.
OOo takes relatively simple and dated TMG report outputs in RTF format and transmogrifies them into exceedingly complex RTF files after just one save operation. Footnote fonts, in particular, may not survive this operation exactly as intended.
Good luck,
John