The main purpose of this study is to evaluate the overall safety and maximum dose of CI 1033 in combination with paclitaxel and carboplatin in patients with NSCLC.

Inclusion Criteria:

• At least one target lesion that is unidimensionally measurable as defined by Response Evaluation Criteria in Solid Tumors (RECIST ; Appendix B.2 ) and has not been previously irradiated; a tumor that expresses at least one member of the erbB family of receptors (as determined by immunohistochemical evaluation by a Sponsor-designated core laboratory)

Exclusion Criteria:

• Prior chemotherapy, biologic therapy, immunotherapy, treatment with Herceptin, or treatment with investigational agents (including CI 1033); hormonal therapy within 28 days prior to baseline disease assessment (to exclude the possibility of a hormone-withdrawal response); prior definitive radiation therapy to the primary cancer site; not yet recovered from the acute effects of surgery or palliative radiotherapy; brain metastases.